\n
-----BEGIN PGP SIGNATURE----- iQEzBAABCAAdFiEEq1nRK9aeMoq1VSgcnJ2qBz9kQNkFAl3hAFIACgkQnJ2qBz9k QNkV/gf+Kwn7xHg76YXd15lZYBzhgj/ABAYEEAAVY49OOCK5+XVmmAufHesMZ2lU Solt8PvbQ8d5786bWpaYXgrTU3JW37c6x1MDUPDLQ8goXWzx7pZWvD+Yup558rDa H1aoqvFKLgpeVVqkUdvvv2CDbgZyOgGlkDqWeS+c5pZd1NPFZzUAoU26slvQ5h4f t41mbavOIm5DChQ5UjwRNw+pb09GXaHrPBRJwa1XuJYJWAansBcQIsxiiqt/43Gn AzwUGrsz4vrPBk+Kcd0SGb8vinFVQr19gBFKFeN3rPFUEUn6T0FPBqaYeiNTNE37 AqASYKlIuhcSf0Wdvx6vxwSHsFl5VA== =NGxV -----END PGP SIGNATURE----- Merge tag 'for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs Pull ext2, quota, reiserfs cleanups and fixes from Jan Kara: - Refactor the quota on/off kernel internal interfaces (mostly for ubifs quota support as ubifs does not want to have inodes holding quota information) - A few other small quota fixes and cleanups - Various small ext2 fixes and cleanups - Reiserfs xattr fix and one cleanup * tag 'for_v5.5-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/jack/linux-fs: (28 commits) ext2: code cleanup for descriptor_loc() fs/quota: handle overflows of sysctl fs.quota.* and report as unsigned long ext2: fix improper function comment ext2: code cleanup for ext2_try_to_allocate() ext2: skip unnecessary operations in ext2_try_to_allocate() ext2: Simplify initialization in ext2_try_to_allocate() ext2: code cleanup by calling ext2_group_last_block_no() ext2: introduce new helper ext2_group_last_block_no() reiserfs: replace open-coded atomic_dec_and_mutex_lock() ext2: check err when partial != NULL quota: Handle quotas without quota inodes in dquot_get_state() quota: Make dquot_disable() work without quota inodes quota: Drop dquot_enable() fs: Use dquot_load_quota_inode() from filesystems quota: Rename vfs_load_quota_inode() to dquot_load_quota_inode() quota: Simplify dquot_resume() quota: Factor out setup of quota inode quota: Check that quota is not dirty before release quota: fix livelock in dquot_writeback_dquots ext2: don't set *count in the case of failure in ext2_try_to_allocate() ...
This commit is contained in:
Linus Torvalds
commit
b8072d5b3c
@ -269,7 +269,7 @@ goal_in_my_reservation(struct ext2_reserve_window *rsv, ext2_grpblk_t grp_goal,
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ext2_fsblk_t group_first_block, group_last_block;
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group_first_block = ext2_group_first_block_no(sb, group);
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group_last_block = group_first_block + EXT2_BLOCKS_PER_GROUP(sb) - 1;
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group_last_block = ext2_group_last_block_no(sb, group);
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if ((rsv->_rsv_start > group_last_block) ||
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(rsv->_rsv_end < group_first_block))
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@ -666,37 +666,24 @@ ext2_try_to_allocate(struct super_block *sb, int group,
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unsigned long *count,
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struct ext2_reserve_window *my_rsv)
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{
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ext2_fsblk_t group_first_block;
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ext2_fsblk_t group_first_block = ext2_group_first_block_no(sb, group);
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ext2_fsblk_t group_last_block = ext2_group_last_block_no(sb, group);
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ext2_grpblk_t start, end;
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unsigned long num = 0;
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start = 0;
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end = group_last_block - group_first_block + 1;
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/* we do allocation within the reservation window if we have a window */
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if (my_rsv) {
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group_first_block = ext2_group_first_block_no(sb, group);
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if (my_rsv->_rsv_start >= group_first_block)
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start = my_rsv->_rsv_start - group_first_block;
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else
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/* reservation window cross group boundary */
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start = 0;
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end = my_rsv->_rsv_end - group_first_block + 1;
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if (end > EXT2_BLOCKS_PER_GROUP(sb))
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/* reservation window crosses group boundary */
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end = EXT2_BLOCKS_PER_GROUP(sb);
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if ((start <= grp_goal) && (grp_goal < end))
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start = grp_goal;
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else
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if (my_rsv->_rsv_end < group_last_block)
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end = my_rsv->_rsv_end - group_first_block + 1;
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if (grp_goal < start || grp_goal >= end)
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grp_goal = -1;
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} else {
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if (grp_goal > 0)
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start = grp_goal;
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else
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start = 0;
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end = EXT2_BLOCKS_PER_GROUP(sb);
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}
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BUG_ON(start > EXT2_BLOCKS_PER_GROUP(sb));
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repeat:
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if (grp_goal < 0) {
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grp_goal = find_next_usable_block(start, bitmap_bh, end);
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if (grp_goal < 0)
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@ -711,32 +698,23 @@ repeat:
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;
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}
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}
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start = grp_goal;
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if (ext2_set_bit_atomic(sb_bgl_lock(EXT2_SB(sb), group), grp_goal,
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bitmap_bh->b_data)) {
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/*
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* The block was allocated by another thread, or it was
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* allocated and then freed by another thread
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*/
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start++;
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grp_goal++;
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if (start >= end)
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goto fail_access;
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goto repeat;
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}
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num++;
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grp_goal++;
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while (num < *count && grp_goal < end
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&& !ext2_set_bit_atomic(sb_bgl_lock(EXT2_SB(sb), group),
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for (; num < *count && grp_goal < end; grp_goal++) {
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if (ext2_set_bit_atomic(sb_bgl_lock(EXT2_SB(sb), group),
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grp_goal, bitmap_bh->b_data)) {
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if (num == 0)
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continue;
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break;
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}
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num++;
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grp_goal++;
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}
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if (num == 0)
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goto fail_access;
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*count = num;
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return grp_goal - num;
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fail_access:
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*count = num;
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return -1;
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}
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@ -754,10 +732,9 @@ fail_access:
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* but we will shift to the place where start_block is,
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* then start from there, when looking for a reservable space.
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*
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* @size: the target new reservation window size
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* @sb: the super block.
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*
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* @group_first_block: the first block we consider to start
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* the real search from
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* @start_block: the first block we consider to start the real search from
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*
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* @last_block:
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* the maximum block number that our goal reservable space
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@ -908,7 +885,7 @@ static int alloc_new_reservation(struct ext2_reserve_window_node *my_rsv,
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spinlock_t *rsv_lock = &EXT2_SB(sb)->s_rsv_window_lock;
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group_first_block = ext2_group_first_block_no(sb, group);
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group_end_block = group_first_block + (EXT2_BLOCKS_PER_GROUP(sb) - 1);
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group_end_block = ext2_group_last_block_no(sb, group);
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if (grp_goal < 0)
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start_block = group_first_block;
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@ -1115,7 +1092,7 @@ ext2_try_to_allocate_with_rsv(struct super_block *sb, unsigned int group,
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* first block is the block number of the first block in this group
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*/
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group_first_block = ext2_group_first_block_no(sb, group);
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group_last_block = group_first_block + (EXT2_BLOCKS_PER_GROUP(sb) - 1);
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group_last_block = ext2_group_last_block_no(sb, group);
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/*
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* Basically we will allocate a new block from inode's reservation
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@ -1313,6 +1290,13 @@ retry_alloc:
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if (free_blocks > 0) {
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grp_target_blk = ((goal - le32_to_cpu(es->s_first_data_block)) %
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EXT2_BLOCKS_PER_GROUP(sb));
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/*
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* In case we retry allocation (due to fs reservation not
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* working out or fs corruption), the bitmap_bh is non-null
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* pointer and we have to release it before calling
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* read_block_bitmap().
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*/
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brelse(bitmap_bh);
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bitmap_bh = read_block_bitmap(sb, group_no);
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if (!bitmap_bh)
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goto io_error;
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@ -1404,6 +1388,7 @@ allocated:
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* use. So we may want to selectively mark some of the blocks
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* as free
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*/
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num = *count;
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goto retry_alloc;
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}
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@ -813,6 +813,18 @@ ext2_group_first_block_no(struct super_block *sb, unsigned long group_no)
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le32_to_cpu(EXT2_SB(sb)->s_es->s_first_data_block);
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}
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static inline ext2_fsblk_t
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ext2_group_last_block_no(struct super_block *sb, unsigned long group_no)
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{
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struct ext2_sb_info *sbi = EXT2_SB(sb);
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if (group_no == sbi->s_groups_count - 1)
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return le32_to_cpu(sbi->s_es->s_blocks_count) - 1;
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else
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return ext2_group_first_block_no(sb, group_no) +
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EXT2_BLOCKS_PER_GROUP(sb) - 1;
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}
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#define ext2_set_bit __test_and_set_bit_le
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#define ext2_clear_bit __test_and_clear_bit_le
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#define ext2_test_bit test_bit_le
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@ -701,10 +701,13 @@ static int ext2_get_blocks(struct inode *inode,
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if (!partial) {
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count++;
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mutex_unlock(&ei->truncate_mutex);
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if (err)
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goto cleanup;
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goto got_it;
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}
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if (err) {
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mutex_unlock(&ei->truncate_mutex);
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goto cleanup;
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}
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}
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/*
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@ -145,10 +145,13 @@ setversion_out:
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if (ei->i_block_alloc_info){
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struct ext2_reserve_window_node *rsv = &ei->i_block_alloc_info->rsv_window_node;
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rsv->rsv_goal_size = rsv_window_size;
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} else {
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ret = -ENOMEM;
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}
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mutex_unlock(&ei->truncate_mutex);
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mnt_drop_write_file(filp);
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return 0;
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return ret;
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}
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default:
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return -ENOTTY;
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@ -702,13 +702,7 @@ static int ext2_check_descriptors(struct super_block *sb)
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for (i = 0; i < sbi->s_groups_count; i++) {
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struct ext2_group_desc *gdp = ext2_get_group_desc(sb, i, NULL);
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ext2_fsblk_t first_block = ext2_group_first_block_no(sb, i);
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ext2_fsblk_t last_block;
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if (i == sbi->s_groups_count - 1)
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last_block = le32_to_cpu(sbi->s_es->s_blocks_count) - 1;
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else
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last_block = first_block +
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(EXT2_BLOCKS_PER_GROUP(sb) - 1);
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ext2_fsblk_t last_block = ext2_group_last_block_no(sb, i);
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if (le32_to_cpu(gdp->bg_block_bitmap) < first_block ||
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le32_to_cpu(gdp->bg_block_bitmap) > last_block)
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@ -806,7 +800,6 @@ static unsigned long descriptor_loc(struct super_block *sb,
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{
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struct ext2_sb_info *sbi = EXT2_SB(sb);
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unsigned long bg, first_meta_bg;
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int has_super = 0;
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first_meta_bg = le32_to_cpu(sbi->s_es->s_first_meta_bg);
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@ -814,10 +807,8 @@ static unsigned long descriptor_loc(struct super_block *sb,
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nr < first_meta_bg)
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return (logic_sb_block + nr + 1);
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bg = sbi->s_desc_per_block * nr;
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if (ext2_bg_has_super(sb, bg))
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has_super = 1;
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return ext2_group_first_block_no(sb, bg) + has_super;
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return ext2_group_first_block_no(sb, bg) + ext2_bg_has_super(sb, bg);
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}
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static int ext2_fill_super(struct super_block *sb, void *data, int silent)
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@ -5834,7 +5834,7 @@ static int ext4_quota_enable(struct super_block *sb, int type, int format_id,
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/* Don't account quota for quota files to avoid recursion */
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qf_inode->i_flags |= S_NOQUOTA;
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lockdep_set_quota_inode(qf_inode, I_DATA_SEM_QUOTA);
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err = dquot_enable(qf_inode, type, format_id, flags);
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err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
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if (err)
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lockdep_set_quota_inode(qf_inode, I_DATA_SEM_NORMAL);
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iput(qf_inode);
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@ -1940,7 +1940,7 @@ static int f2fs_quota_enable(struct super_block *sb, int type, int format_id,
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/* Don't account quota for quota files to avoid recursion */
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qf_inode->i_flags |= S_NOQUOTA;
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err = dquot_enable(qf_inode, type, format_id, flags);
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err = dquot_load_quota_inode(qf_inode, type, format_id, flags);
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iput(qf_inode);
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return err;
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}
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@ -728,7 +728,7 @@ static int ocfs2_release_dquot(struct dquot *dquot)
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mutex_lock(&dquot->dq_lock);
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/* Check whether we are not racing with some other dqget() */
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if (atomic_read(&dquot->dq_count) > 1)
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if (dquot_is_busy(dquot))
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goto out;
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/* Running from downconvert thread? Postpone quota processing to wq */
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if (current == osb->dc_task) {
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@ -926,8 +926,8 @@ static int ocfs2_enable_quotas(struct ocfs2_super *osb)
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status = -ENOENT;
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goto out_quota_off;
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}
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status = dquot_enable(inode[type], type, QFMT_OCFS2,
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DQUOT_USAGE_ENABLED);
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status = dquot_load_quota_inode(inode[type], type, QFMT_OCFS2,
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DQUOT_USAGE_ENABLED);
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if (status < 0)
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goto out_quota_off;
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}
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289
fs/quota/dquot.c
289
fs/quota/dquot.c
@ -497,7 +497,7 @@ int dquot_release(struct dquot *dquot)
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mutex_lock(&dquot->dq_lock);
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/* Check whether we are not racing with some other dqget() */
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if (atomic_read(&dquot->dq_count) > 1)
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if (dquot_is_busy(dquot))
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goto out_dqlock;
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if (dqopt->ops[dquot->dq_id.type]->release_dqblk) {
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ret = dqopt->ops[dquot->dq_id.type]->release_dqblk(dquot);
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@ -595,7 +595,6 @@ int dquot_scan_active(struct super_block *sb,
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/* Now we have active dquot so we can just increase use count */
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atomic_inc(&dquot->dq_count);
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spin_unlock(&dq_list_lock);
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dqstats_inc(DQST_LOOKUPS);
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dqput(old_dquot);
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old_dquot = dquot;
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/*
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@ -623,7 +622,7 @@ EXPORT_SYMBOL(dquot_scan_active);
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/* Write all dquot structures to quota files */
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int dquot_writeback_dquots(struct super_block *sb, int type)
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{
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struct list_head *dirty;
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struct list_head dirty;
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struct dquot *dquot;
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struct quota_info *dqopt = sb_dqopt(sb);
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int cnt;
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@ -637,9 +636,10 @@ int dquot_writeback_dquots(struct super_block *sb, int type)
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if (!sb_has_quota_active(sb, cnt))
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continue;
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spin_lock(&dq_list_lock);
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dirty = &dqopt->info[cnt].dqi_dirty_list;
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while (!list_empty(dirty)) {
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dquot = list_first_entry(dirty, struct dquot,
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/* Move list away to avoid livelock. */
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list_replace_init(&dqopt->info[cnt].dqi_dirty_list, &dirty);
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while (!list_empty(&dirty)) {
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dquot = list_first_entry(&dirty, struct dquot,
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dq_dirty);
|
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WARN_ON(!test_bit(DQ_ACTIVE_B, &dquot->dq_flags));
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@ -649,7 +649,6 @@ int dquot_writeback_dquots(struct super_block *sb, int type)
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* use count */
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dqgrab(dquot);
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spin_unlock(&dq_list_lock);
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dqstats_inc(DQST_LOOKUPS);
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err = sb->dq_op->write_dquot(dquot);
|
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if (err) {
|
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/*
|
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@ -2162,14 +2161,29 @@ int dquot_file_open(struct inode *inode, struct file *file)
|
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}
|
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EXPORT_SYMBOL(dquot_file_open);
|
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|
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static void vfs_cleanup_quota_inode(struct super_block *sb, int type)
|
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{
|
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struct quota_info *dqopt = sb_dqopt(sb);
|
||||
struct inode *inode = dqopt->files[type];
|
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|
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if (!inode)
|
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return;
|
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if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
|
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inode_lock(inode);
|
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inode->i_flags &= ~S_NOQUOTA;
|
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inode_unlock(inode);
|
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}
|
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dqopt->files[type] = NULL;
|
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iput(inode);
|
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}
|
||||
|
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/*
|
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* Turn quota off on a device. type == -1 ==> quotaoff for all types (umount)
|
||||
*/
|
||||
int dquot_disable(struct super_block *sb, int type, unsigned int flags)
|
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{
|
||||
int cnt, ret = 0;
|
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int cnt;
|
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struct quota_info *dqopt = sb_dqopt(sb);
|
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struct inode *toputinode[MAXQUOTAS];
|
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|
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/* s_umount should be held in exclusive mode */
|
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if (WARN_ON_ONCE(down_read_trylock(&sb->s_umount)))
|
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@ -2191,7 +2205,6 @@ int dquot_disable(struct super_block *sb, int type, unsigned int flags)
|
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return 0;
|
||||
|
||||
for (cnt = 0; cnt < MAXQUOTAS; cnt++) {
|
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toputinode[cnt] = NULL;
|
||||
if (type != -1 && cnt != type)
|
||||
continue;
|
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if (!sb_has_quota_loaded(sb, cnt))
|
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@ -2211,8 +2224,7 @@ int dquot_disable(struct super_block *sb, int type, unsigned int flags)
|
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dqopt->flags &= ~dquot_state_flag(
|
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DQUOT_SUSPENDED, cnt);
|
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spin_unlock(&dq_state_lock);
|
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iput(dqopt->files[cnt]);
|
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dqopt->files[cnt] = NULL;
|
||||
vfs_cleanup_quota_inode(sb, cnt);
|
||||
continue;
|
||||
}
|
||||
spin_unlock(&dq_state_lock);
|
||||
@ -2234,10 +2246,6 @@ int dquot_disable(struct super_block *sb, int type, unsigned int flags)
|
||||
if (dqopt->ops[cnt]->free_file_info)
|
||||
dqopt->ops[cnt]->free_file_info(sb, cnt);
|
||||
put_quota_format(dqopt->info[cnt].dqi_format);
|
||||
|
||||
toputinode[cnt] = dqopt->files[cnt];
|
||||
if (!sb_has_quota_loaded(sb, cnt))
|
||||
dqopt->files[cnt] = NULL;
|
||||
dqopt->info[cnt].dqi_flags = 0;
|
||||
dqopt->info[cnt].dqi_igrace = 0;
|
||||
dqopt->info[cnt].dqi_bgrace = 0;
|
||||
@ -2259,32 +2267,22 @@ int dquot_disable(struct super_block *sb, int type, unsigned int flags)
|
||||
* must also discard the blockdev buffers so that we see the
|
||||
* changes done by userspace on the next quotaon() */
|
||||
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
|
||||
/* This can happen when suspending quotas on remount-ro... */
|
||||
if (toputinode[cnt] && !sb_has_quota_loaded(sb, cnt)) {
|
||||
inode_lock(toputinode[cnt]);
|
||||
toputinode[cnt]->i_flags &= ~S_NOQUOTA;
|
||||
truncate_inode_pages(&toputinode[cnt]->i_data, 0);
|
||||
inode_unlock(toputinode[cnt]);
|
||||
mark_inode_dirty_sync(toputinode[cnt]);
|
||||
if (!sb_has_quota_loaded(sb, cnt) && dqopt->files[cnt]) {
|
||||
inode_lock(dqopt->files[cnt]);
|
||||
truncate_inode_pages(&dqopt->files[cnt]->i_data, 0);
|
||||
inode_unlock(dqopt->files[cnt]);
|
||||
}
|
||||
if (sb->s_bdev)
|
||||
invalidate_bdev(sb->s_bdev);
|
||||
put_inodes:
|
||||
/* We are done when suspending quotas */
|
||||
if (flags & DQUOT_SUSPENDED)
|
||||
return 0;
|
||||
|
||||
for (cnt = 0; cnt < MAXQUOTAS; cnt++)
|
||||
if (toputinode[cnt]) {
|
||||
/* On remount RO, we keep the inode pointer so that we
|
||||
* can reenable quota on the subsequent remount RW. We
|
||||
* have to check 'flags' variable and not use sb_has_
|
||||
* function because another quotaon / quotaoff could
|
||||
* change global state before we got here. We refuse
|
||||
* to suspend quotas when there is pending delete on
|
||||
* the quota file... */
|
||||
if (!(flags & DQUOT_SUSPENDED))
|
||||
iput(toputinode[cnt]);
|
||||
else if (!toputinode[cnt]->i_nlink)
|
||||
ret = -EBUSY;
|
||||
}
|
||||
return ret;
|
||||
if (!sb_has_quota_loaded(sb, cnt))
|
||||
vfs_cleanup_quota_inode(sb, cnt);
|
||||
return 0;
|
||||
}
|
||||
EXPORT_SYMBOL(dquot_disable);
|
||||
|
||||
@ -2299,28 +2297,52 @@ EXPORT_SYMBOL(dquot_quota_off);
|
||||
* Turn quotas on on a device
|
||||
*/
|
||||
|
||||
/*
|
||||
* Helper function to turn quotas on when we already have the inode of
|
||||
* quota file and no quota information is loaded.
|
||||
*/
|
||||
static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
|
||||
static int vfs_setup_quota_inode(struct inode *inode, int type)
|
||||
{
|
||||
struct super_block *sb = inode->i_sb;
|
||||
struct quota_info *dqopt = sb_dqopt(sb);
|
||||
|
||||
if (!S_ISREG(inode->i_mode))
|
||||
return -EACCES;
|
||||
if (IS_RDONLY(inode))
|
||||
return -EROFS;
|
||||
if (sb_has_quota_loaded(sb, type))
|
||||
return -EBUSY;
|
||||
|
||||
dqopt->files[type] = igrab(inode);
|
||||
if (!dqopt->files[type])
|
||||
return -EIO;
|
||||
if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
|
||||
/* We don't want quota and atime on quota files (deadlocks
|
||||
* possible) Also nobody should write to the file - we use
|
||||
* special IO operations which ignore the immutable bit. */
|
||||
inode_lock(inode);
|
||||
inode->i_flags |= S_NOQUOTA;
|
||||
inode_unlock(inode);
|
||||
/*
|
||||
* When S_NOQUOTA is set, remove dquot references as no more
|
||||
* references can be added
|
||||
*/
|
||||
__dquot_drop(inode);
|
||||
}
|
||||
return 0;
|
||||
}
|
||||
|
||||
int dquot_load_quota_sb(struct super_block *sb, int type, int format_id,
|
||||
unsigned int flags)
|
||||
{
|
||||
struct quota_format_type *fmt = find_quota_format(format_id);
|
||||
struct super_block *sb = inode->i_sb;
|
||||
struct quota_info *dqopt = sb_dqopt(sb);
|
||||
int error;
|
||||
|
||||
/* Just unsuspend quotas? */
|
||||
BUG_ON(flags & DQUOT_SUSPENDED);
|
||||
/* s_umount should be held in exclusive mode */
|
||||
if (WARN_ON_ONCE(down_read_trylock(&sb->s_umount)))
|
||||
up_read(&sb->s_umount);
|
||||
|
||||
if (!fmt)
|
||||
return -ESRCH;
|
||||
if (!S_ISREG(inode->i_mode)) {
|
||||
error = -EACCES;
|
||||
goto out_fmt;
|
||||
}
|
||||
if (IS_RDONLY(inode)) {
|
||||
error = -EROFS;
|
||||
goto out_fmt;
|
||||
}
|
||||
if (!sb->s_op->quota_write || !sb->s_op->quota_read ||
|
||||
(type == PRJQUOTA && sb->dq_op->get_projid == NULL)) {
|
||||
error = -EINVAL;
|
||||
@ -2352,27 +2374,9 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
|
||||
invalidate_bdev(sb->s_bdev);
|
||||
}
|
||||
|
||||
if (!(dqopt->flags & DQUOT_QUOTA_SYS_FILE)) {
|
||||
/* We don't want quota and atime on quota files (deadlocks
|
||||
* possible) Also nobody should write to the file - we use
|
||||
* special IO operations which ignore the immutable bit. */
|
||||
inode_lock(inode);
|
||||
inode->i_flags |= S_NOQUOTA;
|
||||
inode_unlock(inode);
|
||||
/*
|
||||
* When S_NOQUOTA is set, remove dquot references as no more
|
||||
* references can be added
|
||||
*/
|
||||
__dquot_drop(inode);
|
||||
}
|
||||
|
||||
error = -EIO;
|
||||
dqopt->files[type] = igrab(inode);
|
||||
if (!dqopt->files[type])
|
||||
goto out_file_flags;
|
||||
error = -EINVAL;
|
||||
if (!fmt->qf_ops->check_quota_file(sb, type))
|
||||
goto out_file_init;
|
||||
goto out_fmt;
|
||||
|
||||
dqopt->ops[type] = fmt->qf_ops;
|
||||
dqopt->info[type].dqi_format = fmt;
|
||||
@ -2380,7 +2384,7 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
|
||||
INIT_LIST_HEAD(&dqopt->info[type].dqi_dirty_list);
|
||||
error = dqopt->ops[type]->read_file_info(sb, type);
|
||||
if (error < 0)
|
||||
goto out_file_init;
|
||||
goto out_fmt;
|
||||
if (dqopt->flags & DQUOT_QUOTA_SYS_FILE) {
|
||||
spin_lock(&dq_data_lock);
|
||||
dqopt->info[type].dqi_flags |= DQF_SYS_FILE;
|
||||
@ -2395,24 +2399,36 @@ static int vfs_load_quota_inode(struct inode *inode, int type, int format_id,
|
||||
dquot_disable(sb, type, flags);
|
||||
|
||||
return error;
|
||||
out_file_init:
|
||||
dqopt->files[type] = NULL;
|
||||
iput(inode);
|
||||
out_file_flags:
|
||||
inode_lock(inode);
|
||||
inode->i_flags &= ~S_NOQUOTA;
|
||||
inode_unlock(inode);
|
||||
out_fmt:
|
||||
put_quota_format(fmt);
|
||||
|
||||
return error;
|
||||
}
|
||||
EXPORT_SYMBOL(dquot_load_quota_sb);
|
||||
|
||||
/*
|
||||
* More powerful function for turning on quotas on given quota inode allowing
|
||||
* setting of individual quota flags
|
||||
*/
|
||||
int dquot_load_quota_inode(struct inode *inode, int type, int format_id,
|
||||
unsigned int flags)
|
||||
{
|
||||
int err;
|
||||
|
||||
err = vfs_setup_quota_inode(inode, type);
|
||||
if (err < 0)
|
||||
return err;
|
||||
err = dquot_load_quota_sb(inode->i_sb, type, format_id, flags);
|
||||
if (err < 0)
|
||||
vfs_cleanup_quota_inode(inode->i_sb, type);
|
||||
return err;
|
||||
}
|
||||
EXPORT_SYMBOL(dquot_load_quota_inode);
|
||||
|
||||
/* Reenable quotas on remount RW */
|
||||
int dquot_resume(struct super_block *sb, int type)
|
||||
{
|
||||
struct quota_info *dqopt = sb_dqopt(sb);
|
||||
struct inode *inode;
|
||||
int ret = 0, cnt;
|
||||
unsigned int flags;
|
||||
|
||||
@ -2426,8 +2442,6 @@ int dquot_resume(struct super_block *sb, int type)
|
||||
if (!sb_has_quota_suspended(sb, cnt))
|
||||
continue;
|
||||
|
||||
inode = dqopt->files[cnt];
|
||||
dqopt->files[cnt] = NULL;
|
||||
spin_lock(&dq_state_lock);
|
||||
flags = dqopt->flags & dquot_state_flag(DQUOT_USAGE_ENABLED |
|
||||
DQUOT_LIMITS_ENABLED,
|
||||
@ -2436,9 +2450,10 @@ int dquot_resume(struct super_block *sb, int type)
|
||||
spin_unlock(&dq_state_lock);
|
||||
|
||||
flags = dquot_generic_flag(flags, cnt);
|
||||
ret = vfs_load_quota_inode(inode, cnt,
|
||||
dqopt->info[cnt].dqi_fmt_id, flags);
|
||||
iput(inode);
|
||||
ret = dquot_load_quota_sb(sb, cnt, dqopt->info[cnt].dqi_fmt_id,
|
||||
flags);
|
||||
if (ret < 0)
|
||||
vfs_cleanup_quota_inode(sb, type);
|
||||
}
|
||||
|
||||
return ret;
|
||||
@ -2455,48 +2470,13 @@ int dquot_quota_on(struct super_block *sb, int type, int format_id,
|
||||
if (path->dentry->d_sb != sb)
|
||||
error = -EXDEV;
|
||||
else
|
||||
error = vfs_load_quota_inode(d_inode(path->dentry), type,
|
||||
error = dquot_load_quota_inode(d_inode(path->dentry), type,
|
||||
format_id, DQUOT_USAGE_ENABLED |
|
||||
DQUOT_LIMITS_ENABLED);
|
||||
return error;
|
||||
}
|
||||
EXPORT_SYMBOL(dquot_quota_on);
|
||||
|
||||
/*
|
||||
* More powerful function for turning on quotas allowing setting
|
||||
* of individual quota flags
|
||||
*/
|
||||
int dquot_enable(struct inode *inode, int type, int format_id,
|
||||
unsigned int flags)
|
||||
{
|
||||
struct super_block *sb = inode->i_sb;
|
||||
|
||||
/* Just unsuspend quotas? */
|
||||
BUG_ON(flags & DQUOT_SUSPENDED);
|
||||
/* s_umount should be held in exclusive mode */
|
||||
if (WARN_ON_ONCE(down_read_trylock(&sb->s_umount)))
|
||||
up_read(&sb->s_umount);
|
||||
|
||||
if (!flags)
|
||||
return 0;
|
||||
/* Just updating flags needed? */
|
||||
if (sb_has_quota_loaded(sb, type)) {
|
||||
if (flags & DQUOT_USAGE_ENABLED &&
|
||||
sb_has_quota_usage_enabled(sb, type))
|
||||
return -EBUSY;
|
||||
if (flags & DQUOT_LIMITS_ENABLED &&
|
||||
sb_has_quota_limits_enabled(sb, type))
|
||||
return -EBUSY;
|
||||
spin_lock(&dq_state_lock);
|
||||
sb_dqopt(sb)->flags |= dquot_state_flag(flags, type);
|
||||
spin_unlock(&dq_state_lock);
|
||||
return 0;
|
||||
}
|
||||
|
||||
return vfs_load_quota_inode(inode, type, format_id, flags);
|
||||
}
|
||||
EXPORT_SYMBOL(dquot_enable);
|
||||
|
||||
/*
|
||||
* This function is used when filesystem needs to initialize quotas
|
||||
* during mount time.
|
||||
@ -2518,7 +2498,7 @@ int dquot_quota_on_mount(struct super_block *sb, char *qf_name,
|
||||
|
||||
error = security_quota_on(dentry);
|
||||
if (!error)
|
||||
error = vfs_load_quota_inode(d_inode(dentry), type, format_id,
|
||||
error = dquot_load_quota_inode(d_inode(dentry), type, format_id,
|
||||
DQUOT_USAGE_ENABLED | DQUOT_LIMITS_ENABLED);
|
||||
|
||||
out:
|
||||
@ -2543,13 +2523,17 @@ static int dquot_quota_enable(struct super_block *sb, unsigned int flags)
|
||||
if (!(flags & qtype_enforce_flag(type)))
|
||||
continue;
|
||||
/* Can't enforce without accounting */
|
||||
if (!sb_has_quota_usage_enabled(sb, type))
|
||||
return -EINVAL;
|
||||
ret = dquot_enable(dqopt->files[type], type,
|
||||
dqopt->info[type].dqi_fmt_id,
|
||||
DQUOT_LIMITS_ENABLED);
|
||||
if (ret < 0)
|
||||
if (!sb_has_quota_usage_enabled(sb, type)) {
|
||||
ret = -EINVAL;
|
||||
goto out_err;
|
||||
}
|
||||
if (sb_has_quota_limits_enabled(sb, type)) {
|
||||
ret = -EBUSY;
|
||||
goto out_err;
|
||||
}
|
||||
spin_lock(&dq_state_lock);
|
||||
dqopt->flags |= dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
|
||||
spin_unlock(&dq_state_lock);
|
||||
}
|
||||
return 0;
|
||||
out_err:
|
||||
@ -2599,10 +2583,12 @@ static int dquot_quota_disable(struct super_block *sb, unsigned int flags)
|
||||
out_err:
|
||||
/* Backout enforcement disabling we already did */
|
||||
for (type--; type >= 0; type--) {
|
||||
if (flags & qtype_enforce_flag(type))
|
||||
dquot_enable(dqopt->files[type], type,
|
||||
dqopt->info[type].dqi_fmt_id,
|
||||
DQUOT_LIMITS_ENABLED);
|
||||
if (flags & qtype_enforce_flag(type)) {
|
||||
spin_lock(&dq_state_lock);
|
||||
dqopt->flags |=
|
||||
dquot_state_flag(DQUOT_LIMITS_ENABLED, type);
|
||||
spin_unlock(&dq_state_lock);
|
||||
}
|
||||
}
|
||||
return ret;
|
||||
}
|
||||
@ -2800,8 +2786,10 @@ int dquot_get_state(struct super_block *sb, struct qc_state *state)
|
||||
tstate->flags |= QCI_LIMITS_ENFORCED;
|
||||
tstate->spc_timelimit = mi->dqi_bgrace;
|
||||
tstate->ino_timelimit = mi->dqi_igrace;
|
||||
tstate->ino = dqopt->files[type]->i_ino;
|
||||
tstate->blocks = dqopt->files[type]->i_blocks;
|
||||
if (dqopt->files[type]) {
|
||||
tstate->ino = dqopt->files[type]->i_ino;
|
||||
tstate->blocks = dqopt->files[type]->i_blocks;
|
||||
}
|
||||
tstate->nextents = 1; /* We don't know... */
|
||||
spin_unlock(&dq_data_lock);
|
||||
}
|
||||
@ -2860,68 +2848,73 @@ EXPORT_SYMBOL(dquot_quotactl_sysfile_ops);
|
||||
static int do_proc_dqstats(struct ctl_table *table, int write,
|
||||
void __user *buffer, size_t *lenp, loff_t *ppos)
|
||||
{
|
||||
unsigned int type = (int *)table->data - dqstats.stat;
|
||||
unsigned int type = (unsigned long *)table->data - dqstats.stat;
|
||||
s64 value = percpu_counter_sum(&dqstats.counter[type]);
|
||||
|
||||
/* Filter negative values for non-monotonic counters */
|
||||
if (value < 0 && (type == DQST_ALLOC_DQUOTS ||
|
||||
type == DQST_FREE_DQUOTS))
|
||||
value = 0;
|
||||
|
||||
/* Update global table */
|
||||
dqstats.stat[type] =
|
||||
percpu_counter_sum_positive(&dqstats.counter[type]);
|
||||
return proc_dointvec(table, write, buffer, lenp, ppos);
|
||||
dqstats.stat[type] = value;
|
||||
return proc_doulongvec_minmax(table, write, buffer, lenp, ppos);
|
||||
}
|
||||
|
||||
static struct ctl_table fs_dqstats_table[] = {
|
||||
{
|
||||
.procname = "lookups",
|
||||
.data = &dqstats.stat[DQST_LOOKUPS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "drops",
|
||||
.data = &dqstats.stat[DQST_DROPS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "reads",
|
||||
.data = &dqstats.stat[DQST_READS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "writes",
|
||||
.data = &dqstats.stat[DQST_WRITES],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "cache_hits",
|
||||
.data = &dqstats.stat[DQST_CACHE_HITS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "allocated_dquots",
|
||||
.data = &dqstats.stat[DQST_ALLOC_DQUOTS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "free_dquots",
|
||||
.data = &dqstats.stat[DQST_FREE_DQUOTS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
{
|
||||
.procname = "syncs",
|
||||
.data = &dqstats.stat[DQST_SYNCS],
|
||||
.maxlen = sizeof(int),
|
||||
.maxlen = sizeof(unsigned long),
|
||||
.mode = 0444,
|
||||
.proc_handler = do_proc_dqstats,
|
||||
},
|
||||
@ -2983,11 +2976,7 @@ static int __init dquot_init(void)
|
||||
|
||||
/* Find power-of-two hlist_heads which can fit into allocation */
|
||||
nr_hash = (1UL << order) * PAGE_SIZE / sizeof(struct hlist_head);
|
||||
dq_hash_bits = 0;
|
||||
do {
|
||||
dq_hash_bits++;
|
||||
} while (nr_hash >> dq_hash_bits);
|
||||
dq_hash_bits--;
|
||||
dq_hash_bits = ilog2(nr_hash);
|
||||
|
||||
nr_hash = 1UL << dq_hash_bits;
|
||||
dq_hash_mask = nr_hash - 1;
|
||||
|
||||
@ -60,8 +60,6 @@ static int quota_sync_all(int type)
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (type >= MAXQUOTAS)
|
||||
return -EINVAL;
|
||||
ret = security_quotactl(Q_SYNC, type, 0, NULL);
|
||||
if (!ret)
|
||||
iterate_supers(quota_sync_one, &type);
|
||||
@ -686,8 +684,6 @@ static int do_quotactl(struct super_block *sb, int type, int cmd, qid_t id,
|
||||
{
|
||||
int ret;
|
||||
|
||||
if (type >= MAXQUOTAS)
|
||||
return -EINVAL;
|
||||
type = array_index_nospec(type, MAXQUOTAS);
|
||||
/*
|
||||
* Quota not supported on this fs? Check this before s_quota_types
|
||||
@ -831,6 +827,9 @@ int kernel_quotactl(unsigned int cmd, const char __user *special,
|
||||
cmds = cmd >> SUBCMDSHIFT;
|
||||
type = cmd & SUBCMDMASK;
|
||||
|
||||
if (type >= MAXQUOTAS)
|
||||
return -EINVAL;
|
||||
|
||||
/*
|
||||
* As a special case Q_SYNC can be called without a specific device.
|
||||
* It will iterate all superblocks that have quota enabled and call
|
||||
|
||||
@ -217,7 +217,6 @@ static const struct quota_format_ops v1_format_ops = {
|
||||
.check_quota_file = v1_check_quota_file,
|
||||
.read_file_info = v1_read_file_info,
|
||||
.write_file_info = v1_write_file_info,
|
||||
.free_file_info = NULL,
|
||||
.read_dqblk = v1_read_dqblk,
|
||||
.commit_dqblk = v1_commit_dqblk,
|
||||
};
|
||||
|
||||
@ -38,16 +38,10 @@ static int reiserfs_file_release(struct inode *inode, struct file *filp)
|
||||
|
||||
BUG_ON(!S_ISREG(inode->i_mode));
|
||||
|
||||
if (atomic_add_unless(&REISERFS_I(inode)->openers, -1, 1))
|
||||
if (!atomic_dec_and_mutex_lock(&REISERFS_I(inode)->openers,
|
||||
&REISERFS_I(inode)->tailpack))
|
||||
return 0;
|
||||
|
||||
mutex_lock(&REISERFS_I(inode)->tailpack);
|
||||
|
||||
if (!atomic_dec_and_test(&REISERFS_I(inode)->openers)) {
|
||||
mutex_unlock(&REISERFS_I(inode)->tailpack);
|
||||
return 0;
|
||||
}
|
||||
|
||||
/* fast out for when nothing needs to be done */
|
||||
if ((!(REISERFS_I(inode)->i_flags & i_pack_on_close_mask) ||
|
||||
!tail_has_to_be_packed(inode)) &&
|
||||
|
||||
@ -2097,6 +2097,15 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
|
||||
goto out_inserted_sd;
|
||||
}
|
||||
|
||||
/*
|
||||
* Mark it private if we're creating the privroot
|
||||
* or something under it.
|
||||
*/
|
||||
if (IS_PRIVATE(dir) || dentry == REISERFS_SB(sb)->priv_root) {
|
||||
inode->i_flags |= S_PRIVATE;
|
||||
inode->i_opflags &= ~IOP_XATTR;
|
||||
}
|
||||
|
||||
if (reiserfs_posixacl(inode->i_sb)) {
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
retval = reiserfs_inherit_default_acl(th, dir, dentry, inode);
|
||||
@ -2111,8 +2120,7 @@ int reiserfs_new_inode(struct reiserfs_transaction_handle *th,
|
||||
reiserfs_warning(inode->i_sb, "jdm-13090",
|
||||
"ACLs aren't enabled in the fs, "
|
||||
"but vfs thinks they are!");
|
||||
} else if (IS_PRIVATE(dir))
|
||||
inode->i_flags |= S_PRIVATE;
|
||||
}
|
||||
|
||||
if (security->name) {
|
||||
reiserfs_write_unlock(inode->i_sb);
|
||||
|
||||
@ -377,10 +377,13 @@ static struct dentry *reiserfs_lookup(struct inode *dir, struct dentry *dentry,
|
||||
|
||||
/*
|
||||
* Propagate the private flag so we know we're
|
||||
* in the priv tree
|
||||
* in the priv tree. Also clear IOP_XATTR
|
||||
* since we don't have xattrs on xattr files.
|
||||
*/
|
||||
if (IS_PRIVATE(dir))
|
||||
if (IS_PRIVATE(dir)) {
|
||||
inode->i_flags |= S_PRIVATE;
|
||||
inode->i_opflags &= ~IOP_XATTR;
|
||||
}
|
||||
}
|
||||
reiserfs_write_unlock(dir->i_sb);
|
||||
if (retval == IO_ERROR) {
|
||||
|
||||
@ -1168,6 +1168,8 @@ static inline int bmap_would_wrap(unsigned bmap_nr)
|
||||
return bmap_nr > ((1LL << 16) - 1);
|
||||
}
|
||||
|
||||
extern const struct xattr_handler *reiserfs_xattr_handlers[];
|
||||
|
||||
/*
|
||||
* this says about version of key of all items (but stat data) the
|
||||
* object consists of
|
||||
|
||||
@ -2049,6 +2049,8 @@ static int reiserfs_fill_super(struct super_block *s, void *data, int silent)
|
||||
if (replay_only(s))
|
||||
goto error_unlocked;
|
||||
|
||||
s->s_xattr = reiserfs_xattr_handlers;
|
||||
|
||||
if (bdev_read_only(s->s_bdev) && !sb_rdonly(s)) {
|
||||
SWARN(silent, s, "clm-7000",
|
||||
"Detected readonly device, marking FS readonly");
|
||||
|
||||
@ -122,13 +122,13 @@ static struct dentry *open_xa_root(struct super_block *sb, int flags)
|
||||
struct dentry *xaroot;
|
||||
|
||||
if (d_really_is_negative(privroot))
|
||||
return ERR_PTR(-ENODATA);
|
||||
return ERR_PTR(-EOPNOTSUPP);
|
||||
|
||||
inode_lock_nested(d_inode(privroot), I_MUTEX_XATTR);
|
||||
|
||||
xaroot = dget(REISERFS_SB(sb)->xattr_root);
|
||||
if (!xaroot)
|
||||
xaroot = ERR_PTR(-ENODATA);
|
||||
xaroot = ERR_PTR(-EOPNOTSUPP);
|
||||
else if (d_really_is_negative(xaroot)) {
|
||||
int err = -ENODATA;
|
||||
|
||||
@ -619,6 +619,10 @@ int reiserfs_xattr_set(struct inode *inode, const char *name,
|
||||
int error, error2;
|
||||
size_t jbegin_count = reiserfs_xattr_nblocks(inode, buffer_size);
|
||||
|
||||
/* Check before we start a transaction and then do nothing. */
|
||||
if (!d_really_is_positive(REISERFS_SB(inode->i_sb)->priv_root))
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
if (!(flags & XATTR_REPLACE))
|
||||
jbegin_count += reiserfs_xattr_jcreate_nblocks(inode);
|
||||
|
||||
@ -841,8 +845,7 @@ ssize_t reiserfs_listxattr(struct dentry * dentry, char *buffer, size_t size)
|
||||
if (d_really_is_negative(dentry))
|
||||
return -EINVAL;
|
||||
|
||||
if (!dentry->d_sb->s_xattr ||
|
||||
get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1)
|
||||
if (get_inode_sd_version(d_inode(dentry)) == STAT_DATA_V1)
|
||||
return -EOPNOTSUPP;
|
||||
|
||||
dir = open_xa_dir(d_inode(dentry), XATTR_REPLACE);
|
||||
@ -882,6 +885,7 @@ static int create_privroot(struct dentry *dentry)
|
||||
}
|
||||
|
||||
d_inode(dentry)->i_flags |= S_PRIVATE;
|
||||
d_inode(dentry)->i_opflags &= ~IOP_XATTR;
|
||||
reiserfs_info(dentry->d_sb, "Created %s - reserved for xattr "
|
||||
"storage.\n", PRIVROOT_NAME);
|
||||
|
||||
@ -895,7 +899,7 @@ static int create_privroot(struct dentry *dentry) { return 0; }
|
||||
#endif
|
||||
|
||||
/* Actual operations that are exported to VFS-land */
|
||||
static const struct xattr_handler *reiserfs_xattr_handlers[] = {
|
||||
const struct xattr_handler *reiserfs_xattr_handlers[] = {
|
||||
#ifdef CONFIG_REISERFS_FS_XATTR
|
||||
&reiserfs_xattr_user_handler,
|
||||
&reiserfs_xattr_trusted_handler,
|
||||
@ -966,8 +970,10 @@ int reiserfs_lookup_privroot(struct super_block *s)
|
||||
if (!IS_ERR(dentry)) {
|
||||
REISERFS_SB(s)->priv_root = dentry;
|
||||
d_set_d_op(dentry, &xattr_lookup_poison_ops);
|
||||
if (d_really_is_positive(dentry))
|
||||
if (d_really_is_positive(dentry)) {
|
||||
d_inode(dentry)->i_flags |= S_PRIVATE;
|
||||
d_inode(dentry)->i_opflags &= ~IOP_XATTR;
|
||||
}
|
||||
} else
|
||||
err = PTR_ERR(dentry);
|
||||
inode_unlock(d_inode(s->s_root));
|
||||
@ -996,7 +1002,6 @@ int reiserfs_xattr_init(struct super_block *s, int mount_flags)
|
||||
}
|
||||
|
||||
if (d_really_is_positive(privroot)) {
|
||||
s->s_xattr = reiserfs_xattr_handlers;
|
||||
inode_lock(d_inode(privroot));
|
||||
if (!REISERFS_SB(s)->xattr_root) {
|
||||
struct dentry *dentry;
|
||||
|
||||
@ -320,10 +320,8 @@ reiserfs_inherit_default_acl(struct reiserfs_transaction_handle *th,
|
||||
* would be useless since permissions are ignored, and a pain because
|
||||
* it introduces locking cycles
|
||||
*/
|
||||
if (IS_PRIVATE(dir)) {
|
||||
inode->i_flags |= S_PRIVATE;
|
||||
if (IS_PRIVATE(inode))
|
||||
goto apply_umask;
|
||||
}
|
||||
|
||||
err = posix_acl_create(dir, &inode->i_mode, &default_acl, &acl);
|
||||
if (err)
|
||||
|
||||
@ -263,7 +263,7 @@ enum {
|
||||
};
|
||||
|
||||
struct dqstats {
|
||||
int stat[_DQST_DQSTAT_LAST];
|
||||
unsigned long stat[_DQST_DQSTAT_LAST];
|
||||
struct percpu_counter counter[_DQST_DQSTAT_LAST];
|
||||
};
|
||||
|
||||
|
||||
@ -54,6 +54,16 @@ static inline struct dquot *dqgrab(struct dquot *dquot)
|
||||
atomic_inc(&dquot->dq_count);
|
||||
return dquot;
|
||||
}
|
||||
|
||||
static inline bool dquot_is_busy(struct dquot *dquot)
|
||||
{
|
||||
if (test_bit(DQ_MOD_B, &dquot->dq_flags))
|
||||
return true;
|
||||
if (atomic_read(&dquot->dq_count) > 1)
|
||||
return true;
|
||||
return false;
|
||||
}
|
||||
|
||||
void dqput(struct dquot *dquot);
|
||||
int dquot_scan_active(struct super_block *sb,
|
||||
int (*fn)(struct dquot *dquot, unsigned long priv),
|
||||
@ -87,7 +97,9 @@ int dquot_mark_dquot_dirty(struct dquot *dquot);
|
||||
|
||||
int dquot_file_open(struct inode *inode, struct file *file);
|
||||
|
||||
int dquot_enable(struct inode *inode, int type, int format_id,
|
||||
int dquot_load_quota_sb(struct super_block *sb, int type, int format_id,
|
||||
unsigned int flags);
|
||||
int dquot_load_quota_inode(struct inode *inode, int type, int format_id,
|
||||
unsigned int flags);
|
||||
int dquot_quota_on(struct super_block *sb, int type, int format_id,
|
||||
const struct path *path);
|
||||
|
||||
Loading…
Reference in New Issue
Block a user