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linux/fs/ext4
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Christoph Hellwig 66dabbb65d mm: return an ERR_PTR from __filemap_get_folio 
Instead of returning NULL for all errors, distinguish between:

 - no entry found and not asked to allocated (-ENOENT)
 - failed to allocate memory (-ENOMEM)
 - would block (-EAGAIN)

so that callers don't have to guess the error based on the passed in
flags.

Also pass through the error through the direct callers: filemap_get_folio,
filemap_lock_folio filemap_grab_folio and filemap_get_incore_folio.

[hch@lst.de: fix null-pointer deref]
  Link: https://lkml.kernel.org/r/20230310070023.GA13563@lst.de
  Link: https://lkml.kernel.org/r/20230310043137.GA1624890@u2004
Link: https://lkml.kernel.org/r/20230307143410.28031-8-hch@lst.de
Signed-off-by: Christoph Hellwig <hch@lst.de>
Acked-by: Ryusuke Konishi <konishi.ryusuke@gmail.com> [nilfs2]
Cc: Andreas Gruenbacher <agruenba@redhat.com>
Cc: Hugh Dickins <hughd@google.com>
Cc: Matthew Wilcox (Oracle) <willy@infradead.org>
Cc: Naoya Horiguchi <naoya.horiguchi@linux.dev>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-04-05 19:42:42 -07:00
..
.kunitconfig ext4: add .kunitconfig fragment to enable ext4-specific tests 2021-02-11 23:16:30 -05:00
acl.c fs: port acl to mnt_idmap 2023-01-19 09:24:28 +01:00
acl.h fs: port ->set_acl() to pass mnt_idmap 2023-01-19 09:24:27 +01:00
balloc.c ext4: use ext4_debug() instead of jbd_debug() 2022-08-02 23:52:19 -04:00
bitmap.c
block_validity.c ext4: add ext4_sb_block_valid() refactored out of ext4_inode_block_valid() 2022-02-25 21:34:56 -05:00
crypto.c ext4: refactor and move ext4_ioctl_get_encryption_pwsalt() 2022-05-21 22:24:24 -04:00
dir.c ext4: fix spelling errors in comments 2022-05-11 15:19:06 -04:00
ext4_extents.h ext4: fix sparse warnings 2021-08-30 23:36:50 -04:00
ext4_jbd2.c ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
ext4_jbd2.h ext4: split ext4_journal_start trace for debug 2022-12-01 10:46:54 -05:00
ext4.h Bug fixes and regressions for ext4, the most serious of which is a 2023-03-12 08:55:55 -07:00
extents_status.c ext4: fix reserved cluster accounting in __es_remove_extent() 2022-12-09 00:58:04 -05:00
extents_status.h
extents.c ext4: fix inode tree inconsistency caused by ENOMEM 2023-02-18 23:58:28 -05:00
fast_commit.c ext4: use ext4_fc_tl_mem in fast-commit replay path 2023-02-09 10:43:23 -05:00
fast_commit.h ext4: add missing validation of fast-commit record lengths 2022-12-08 21:49:24 -05:00
file.c Improve performance for ext4 by allowing multiple process to perform 2023-02-28 09:05:47 -08:00
fsmap.c ext4: fix another off-by-one fsmap error on 1k block filesystems 2023-03-07 20:20:48 -05:00
fsmap.h ext4: fsmap: fix the block/inode bitmap comment 2021-06-24 09:48:29 -04:00
fsync.c block: use an on-stack bio in blkdev_issue_flush 2021-01-27 09:51:48 -07:00
hash.c unicode: clean up the Kconfig symbol confusion 2022-01-20 19:57:24 -05:00
ialloc.c fs: port fs{g,u}id helpers to mnt_idmap 2023-01-19 09:24:30 +01:00
indirect.c ext4: fix error code return to user-space in ext4_get_branch() 2022-12-08 21:49:24 -05:00
inline.c ext4: move where set the MAY_INLINE_DATA flag is set 2023-03-11 00:44:24 -05:00
inode-test.c
inode.c mm: return an ERR_PTR from __filemap_get_folio 2023-04-05 19:42:42 -07:00
ioctl.c Bug fixes and regressions for ext4, the most serious of which is a 2023-03-12 08:55:55 -07:00
Kconfig ext: EXT4_KUNIT_TESTS should depend on EXT4_FS instead of selecting it 2021-02-11 23:12:59 -05:00
Makefile ext4: move ext4 crypto code to its own file crypto.c 2022-05-21 22:24:24 -04:00
mballoc.c ext4: make ext4_mb_initialize_context return void 2022-12-08 21:49:25 -05:00
mballoc.h ext4: use buckets for cr 1 block scan instead of rbtree 2022-09-21 22:12:03 -04:00
migrate.c ext4: fix warning in 'ext4_da_release_space' 2022-11-06 01:07:59 -04:00
mmp.c treewide: use get_random_u32_{above,below}() instead of manual loop 2022-11-18 02:15:22 +01:00
move_extent.c mm: return an ERR_PTR from __filemap_get_folio 2023-04-05 19:42:42 -07:00
namei.c ext4: fix possible double unlock when moving a directory 2023-03-17 21:53:52 -04:00
orphan.c ext4: remove trailing newline from ext4_msg() message 2022-12-08 21:49:23 -05:00
page-io.c ext4: fix cgroup writeback accounting with fs-layer encryption 2023-03-07 20:12:30 -05:00
readpage.c ext4: simplify ext4_readpage_limit() 2023-01-09 19:06:08 -08:00
resize.c ext4: fix corruption when online resizing a 1K bigalloc fs 2022-12-08 21:49:24 -05:00
super.c Bug fixes and regressions for ext4, the most serious of which is a 2023-03-12 08:55:55 -07:00
symlink.c fs: port ->getattr() to pass mnt_idmap 2023-01-19 09:24:25 +01:00
sysfs.c ext4: make kobj_type structures constant 2023-03-07 20:20:48 -05:00
truncate.h ext4: Convert to use mapping->invalidate_lock 2021-07-13 14:29:00 +02:00
verity.c fsverity: pass pos and size to ->write_merkle_tree_block 2023-01-01 15:46:48 -08:00
xattr_hurd.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_security.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_trusted.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr_user.c fs: port xattr to mnt_idmap 2023-01-19 09:24:28 +01:00
xattr.c Bug fixes and regressions for ext4, the most serious of which is a 2023-03-12 08:55:55 -07:00
xattr.h ext4: remove EA inode entry from mbcache on inode eviction 2022-08-02 23:56:25 -04:00