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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-06 17:13:18 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2022-10-06 17:13:18 -0700 |
| commit | 7a3353c5c441175582cf0d17f855b2ffd83fb9db (patch) | |
| tree | e19ee5ba7a4062636ac765c97dbe7ba15daf1ca9 /Documentation | |
| parent | 70df64d6c6c2f76be47311fa6630d6edbefa711e (diff) | |
| parent | 47091e4ed9af648d6cfa3a5f0809ece371294ecb (diff) | |
Merge tag 'pull-file' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs
Pull vfs file updates from Al Viro:
"struct file-related stuff"
* tag 'pull-file' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs:
dma_buf_getfile(): don't bother with ->f_flags reassignments
Change calling conventions for filldir_t
locks: fix TOCTOU race when granting write lease
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/filesystems/porting.rst | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/Documentation/filesystems/porting.rst b/Documentation/filesystems/porting.rst index aee9aaf9f3df..e8f370d9ce9c 100644 --- a/Documentation/filesystems/porting.rst +++ b/Documentation/filesystems/porting.rst @@ -922,3 +922,14 @@ is provided - file_open_root_mnt(). In-tree users adjusted. no_llseek is gone; don't set .llseek to that - just leave it NULL instead. Checks for "does that file have llseek(2), or should it fail with ESPIPE" should be done by looking at FMODE_LSEEK in file->f_mode. + +--- + +*mandatory* + +filldir_t (readdir callbacks) calling conventions have changed. Instead of +returning 0 or -E... it returns bool now. false means "no more" (as -E... used +to) and true - "keep going" (as 0 in old calling conventions). Rationale: +callers never looked at specific -E... values anyway. ->iterate() and +->iterate_shared() instance require no changes at all, all filldir_t ones in +the tree converted. |