ext2: get rid of most mentions of XIP in ext2
To help people transition, accept the 'xip' mount option (and report it in /proc/mounts), but print a message encouraging people to switch over to the 'dax' option. Signed-off-by: Matthew Wilcox <matthew.r.wilcox@intel.com> Reviewed-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com> Cc: Andreas Dilger <andreas.dilger@intel.com> Cc: Boaz Harrosh <boaz@plexistor.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Dave Chinner <david@fromorbit.com> Cc: Jan Kara <jack@suse.cz> Cc: Jens Axboe <axboe@kernel.dk> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Randy Dunlap <rdunlap@infradead.org> Cc: Ross Zwisler <ross.zwisler@linux.intel.com> Cc: Theodore Ts'o <tytso@mit.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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97443aa809
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@ -20,6 +20,9 @@ minixdf Makes `df' act like Minix.
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check=none, nocheck (*) Don't do extra checking of bitmaps on mount
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check=none, nocheck (*) Don't do extra checking of bitmaps on mount
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(check=normal and check=strict options removed)
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(check=normal and check=strict options removed)
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dax Use direct access (no page cache). See
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Documentation/filesystems/dax.txt.
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debug Extra debugging information is sent to the
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debug Extra debugging information is sent to the
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kernel syslog. Useful for developers.
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kernel syslog. Useful for developers.
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@ -56,8 +59,6 @@ noacl Don't support POSIX ACLs.
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nobh Do not attach buffer_heads to file pagecache.
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nobh Do not attach buffer_heads to file pagecache.
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xip Use execute in place (no caching) if possible
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grpquota,noquota,quota,usrquota Quota options are silently ignored by ext2.
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grpquota,noquota,quota,usrquota Quota options are silently ignored by ext2.
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@ -380,14 +380,15 @@ struct ext2_inode {
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#define EXT2_MOUNT_NO_UID32 0x000200 /* Disable 32-bit UIDs */
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#define EXT2_MOUNT_NO_UID32 0x000200 /* Disable 32-bit UIDs */
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#define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */
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#define EXT2_MOUNT_XATTR_USER 0x004000 /* Extended user attributes */
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#define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */
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#define EXT2_MOUNT_POSIX_ACL 0x008000 /* POSIX Access Control Lists */
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#ifdef CONFIG_FS_DAX
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#define EXT2_MOUNT_XIP 0x010000 /* Obsolete, use DAX */
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#define EXT2_MOUNT_XIP 0x010000 /* Execute in place */
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#else
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#define EXT2_MOUNT_XIP 0
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#endif
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#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */
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#define EXT2_MOUNT_USRQUOTA 0x020000 /* user quota */
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#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */
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#define EXT2_MOUNT_GRPQUOTA 0x040000 /* group quota */
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#define EXT2_MOUNT_RESERVATION 0x080000 /* Preallocation */
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#define EXT2_MOUNT_RESERVATION 0x080000 /* Preallocation */
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#ifdef CONFIG_FS_DAX
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#define EXT2_MOUNT_DAX 0x100000 /* Direct Access */
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#else
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#define EXT2_MOUNT_DAX 0
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#endif
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#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
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#define clear_opt(o, opt) o &= ~EXT2_MOUNT_##opt
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@ -792,7 +793,7 @@ extern int ext2_fsync(struct file *file, loff_t start, loff_t end,
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int datasync);
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int datasync);
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extern const struct inode_operations ext2_file_inode_operations;
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extern const struct inode_operations ext2_file_inode_operations;
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extern const struct file_operations ext2_file_operations;
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extern const struct file_operations ext2_file_operations;
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extern const struct file_operations ext2_xip_file_operations;
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extern const struct file_operations ext2_dax_file_operations;
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/* inode.c */
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/* inode.c */
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extern const struct address_space_operations ext2_aops;
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extern const struct address_space_operations ext2_aops;
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@ -109,7 +109,7 @@ const struct file_operations ext2_file_operations = {
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};
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};
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#ifdef CONFIG_FS_DAX
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#ifdef CONFIG_FS_DAX
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const struct file_operations ext2_xip_file_operations = {
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const struct file_operations ext2_dax_file_operations = {
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.llseek = generic_file_llseek,
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.llseek = generic_file_llseek,
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.read = new_sync_read,
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.read = new_sync_read,
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.write = new_sync_write,
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.write = new_sync_write,
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@ -1286,7 +1286,7 @@ void ext2_set_inode_flags(struct inode *inode)
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inode->i_flags |= S_NOATIME;
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inode->i_flags |= S_NOATIME;
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if (flags & EXT2_DIRSYNC_FL)
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if (flags & EXT2_DIRSYNC_FL)
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inode->i_flags |= S_DIRSYNC;
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inode->i_flags |= S_DIRSYNC;
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if (test_opt(inode->i_sb, XIP))
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if (test_opt(inode->i_sb, DAX))
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inode->i_flags |= S_DAX;
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inode->i_flags |= S_DAX;
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}
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}
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@ -1388,9 +1388,9 @@ struct inode *ext2_iget (struct super_block *sb, unsigned long ino)
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if (S_ISREG(inode->i_mode)) {
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if (S_ISREG(inode->i_mode)) {
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inode->i_op = &ext2_file_inode_operations;
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inode->i_op = &ext2_file_inode_operations;
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if (test_opt(inode->i_sb, XIP)) {
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if (test_opt(inode->i_sb, DAX)) {
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inode->i_mapping->a_ops = &ext2_aops;
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inode->i_mapping->a_ops = &ext2_aops;
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inode->i_fop = &ext2_xip_file_operations;
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inode->i_fop = &ext2_dax_file_operations;
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} else if (test_opt(inode->i_sb, NOBH)) {
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} else if (test_opt(inode->i_sb, NOBH)) {
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inode->i_mapping->a_ops = &ext2_nobh_aops;
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inode->i_mapping->a_ops = &ext2_nobh_aops;
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inode->i_fop = &ext2_file_operations;
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inode->i_fop = &ext2_file_operations;
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@ -104,9 +104,9 @@ static int ext2_create (struct inode * dir, struct dentry * dentry, umode_t mode
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return PTR_ERR(inode);
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return PTR_ERR(inode);
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inode->i_op = &ext2_file_inode_operations;
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inode->i_op = &ext2_file_inode_operations;
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if (test_opt(inode->i_sb, XIP)) {
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if (test_opt(inode->i_sb, DAX)) {
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inode->i_mapping->a_ops = &ext2_aops;
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inode->i_mapping->a_ops = &ext2_aops;
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inode->i_fop = &ext2_xip_file_operations;
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inode->i_fop = &ext2_dax_file_operations;
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} else if (test_opt(inode->i_sb, NOBH)) {
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} else if (test_opt(inode->i_sb, NOBH)) {
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inode->i_mapping->a_ops = &ext2_nobh_aops;
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inode->i_mapping->a_ops = &ext2_nobh_aops;
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inode->i_fop = &ext2_file_operations;
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inode->i_fop = &ext2_file_operations;
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@ -125,9 +125,9 @@ static int ext2_tmpfile(struct inode *dir, struct dentry *dentry, umode_t mode)
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return PTR_ERR(inode);
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return PTR_ERR(inode);
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inode->i_op = &ext2_file_inode_operations;
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inode->i_op = &ext2_file_inode_operations;
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if (test_opt(inode->i_sb, XIP)) {
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if (test_opt(inode->i_sb, DAX)) {
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inode->i_mapping->a_ops = &ext2_aops;
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inode->i_mapping->a_ops = &ext2_aops;
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inode->i_fop = &ext2_xip_file_operations;
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inode->i_fop = &ext2_dax_file_operations;
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} else if (test_opt(inode->i_sb, NOBH)) {
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} else if (test_opt(inode->i_sb, NOBH)) {
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inode->i_mapping->a_ops = &ext2_nobh_aops;
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inode->i_mapping->a_ops = &ext2_nobh_aops;
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inode->i_fop = &ext2_file_operations;
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inode->i_fop = &ext2_file_operations;
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@ -294,6 +294,8 @@ static int ext2_show_options(struct seq_file *seq, struct dentry *root)
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#ifdef CONFIG_FS_DAX
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#ifdef CONFIG_FS_DAX
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if (sbi->s_mount_opt & EXT2_MOUNT_XIP)
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if (sbi->s_mount_opt & EXT2_MOUNT_XIP)
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seq_puts(seq, ",xip");
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seq_puts(seq, ",xip");
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if (sbi->s_mount_opt & EXT2_MOUNT_DAX)
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seq_puts(seq, ",dax");
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#endif
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#endif
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if (!test_opt(sb, RESERVATION))
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if (!test_opt(sb, RESERVATION))
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@ -402,7 +404,7 @@ enum {
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Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic,
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Opt_resgid, Opt_resuid, Opt_sb, Opt_err_cont, Opt_err_panic,
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Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
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Opt_err_ro, Opt_nouid32, Opt_nocheck, Opt_debug,
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Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
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Opt_oldalloc, Opt_orlov, Opt_nobh, Opt_user_xattr, Opt_nouser_xattr,
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Opt_acl, Opt_noacl, Opt_xip, Opt_ignore, Opt_err, Opt_quota,
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Opt_acl, Opt_noacl, Opt_xip, Opt_dax, Opt_ignore, Opt_err, Opt_quota,
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Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
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Opt_usrquota, Opt_grpquota, Opt_reservation, Opt_noreservation
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};
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};
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@ -431,6 +433,7 @@ static const match_table_t tokens = {
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{Opt_acl, "acl"},
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{Opt_acl, "acl"},
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{Opt_noacl, "noacl"},
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{Opt_noacl, "noacl"},
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{Opt_xip, "xip"},
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{Opt_xip, "xip"},
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{Opt_dax, "dax"},
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{Opt_grpquota, "grpquota"},
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{Opt_grpquota, "grpquota"},
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{Opt_ignore, "noquota"},
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{Opt_ignore, "noquota"},
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{Opt_quota, "quota"},
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{Opt_quota, "quota"},
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@ -558,10 +561,14 @@ static int parse_options(char *options, struct super_block *sb)
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break;
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break;
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#endif
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#endif
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case Opt_xip:
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case Opt_xip:
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#ifdef CONFIG_FS_DAX
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ext2_msg(sb, KERN_INFO, "use dax instead of xip");
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set_opt(sbi->s_mount_opt, XIP);
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set_opt(sbi->s_mount_opt, XIP);
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/* Fall through */
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case Opt_dax:
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#ifdef CONFIG_FS_DAX
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set_opt(sbi->s_mount_opt, DAX);
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#else
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#else
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ext2_msg(sb, KERN_INFO, "xip option not supported");
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ext2_msg(sb, KERN_INFO, "dax option not supported");
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#endif
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#endif
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break;
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break;
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@ -905,15 +912,15 @@ static int ext2_fill_super(struct super_block *sb, void *data, int silent)
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blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
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blocksize = BLOCK_SIZE << le32_to_cpu(sbi->s_es->s_log_block_size);
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if (sbi->s_mount_opt & EXT2_MOUNT_XIP) {
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if (sbi->s_mount_opt & EXT2_MOUNT_DAX) {
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if (blocksize != PAGE_SIZE) {
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if (blocksize != PAGE_SIZE) {
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ext2_msg(sb, KERN_ERR,
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ext2_msg(sb, KERN_ERR,
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"error: unsupported blocksize for xip");
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"error: unsupported blocksize for dax");
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goto failed_mount;
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goto failed_mount;
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}
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}
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if (!sb->s_bdev->bd_disk->fops->direct_access) {
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if (!sb->s_bdev->bd_disk->fops->direct_access) {
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ext2_msg(sb, KERN_ERR,
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ext2_msg(sb, KERN_ERR,
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"error: device does not support xip");
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"error: device does not support dax");
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goto failed_mount;
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goto failed_mount;
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}
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}
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}
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}
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@ -1286,10 +1293,10 @@ static int ext2_remount (struct super_block * sb, int * flags, char * data)
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((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
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((sbi->s_mount_opt & EXT2_MOUNT_POSIX_ACL) ? MS_POSIXACL : 0);
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es = sbi->s_es;
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es = sbi->s_es;
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if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT2_MOUNT_XIP) {
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if ((sbi->s_mount_opt ^ old_opts.s_mount_opt) & EXT2_MOUNT_DAX) {
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ext2_msg(sb, KERN_WARNING, "warning: refusing change of "
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ext2_msg(sb, KERN_WARNING, "warning: refusing change of "
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"xip flag with busy inodes while remounting");
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"dax flag with busy inodes while remounting");
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sbi->s_mount_opt ^= EXT2_MOUNT_XIP;
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sbi->s_mount_opt ^= EXT2_MOUNT_DAX;
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}
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}
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if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
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if ((*flags & MS_RDONLY) == (sb->s_flags & MS_RDONLY)) {
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spin_unlock(&sbi->s_lock);
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spin_unlock(&sbi->s_lock);
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