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| author |   Tal Zussman <tz2294@columbia.edu> | 2021-12-31 02:57:50 -0500 |
|---|---|---|
| committer |   Al Viro <viro@zeniv.linux.org.uk> | 2022-01-30 14:34:55 -0500 |
| commit | c51acdb78f92719127995c0fe41108df0552edc3 (patch) | |
| tree | 14c5041e3a5a26ac1e1a7d1783b06730bc169c3f /fs/read_write.c | |
| parent | Linux 5.17-rc1 (diff) | |
| download | linux-dev-c51acdb78f92719127995c0fe41108df0552edc3.tar.xz linux-dev-c51acdb78f92719127995c0fe41108df0552edc3.zip | |
fs: Remove FIXME comment in generic_write_checks()
This patch removes an unnecessary comment that had to do with block special
files from `generic_write_checks()`.
The comment, originally added in Linux v2.4.14.9, was to clarify that we only
set `pos` to the file size when the file was opened with `O_APPEND` if the file
wasn't a block special file. Prior to Linux v2.4, block special files had a
different `write()` function which was unified into a generic `write()` function
in Linux v2.4. This generic `write()` function called `generic_write_checks()`.
For more details, see this earlier conversation:
https://lore.kernel.org/linux-fsdevel/Yc4Czk5A+p5p2Y4W@mit.edu/
Currently, block special devices have their own `write_iter()` function and no
longer share the same `generic_write_checks()`, therefore rendering the comment
irrelevant.
Signed-off-by: Tal Zussman <tz2294@columbia.edu>
Co-authored-by: Xijiao Li <xl2950@columbia.edu>
Co-authored-by: Hans Montero <hjm2133@columbia.edu>
Suggested-by: Theodore Ts'o <tytso@mit.edu>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/read_write.c')
| -rw-r--r-- | fs/read_write.c | 1 |
1 files changed, 0 insertions, 1 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 0074afa7ecb3..0173dc7183c9 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1637,7 +1637,6 @@ ssize_t generic_write_checks(struct kiocb *iocb, struct iov_iter *from) if (!iov_iter_count(from)) return 0; - /* FIXME: this is for backwards compatibility with 2.4 */ if (iocb->ki_flags & IOCB_APPEND) iocb->ki_pos = i_size_read(inode); |