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| author | Taotao Chen <[email protected]> | 2025-07-16 09:36:09 +0000 |
|---|---|---|
| committer | Christian Brauner <[email protected]> | 2025-07-16 12:48:18 +0000 |
| commit | ae21c0c0ac56aa734327e9c8b7dfef4270ab54d4 (patch) | |
| tree | 0ec8d85041debe49759630d4124c2dd3c164dcab /fs/ext4/file.c | |
| parent | mm/pagemap: add write_begin_get_folio() helper function (diff) | |
| download | kernel-ae21c0c0ac56aa734327e9c8b7dfef4270ab54d4.tar.gz kernel-ae21c0c0ac56aa734327e9c8b7dfef4270ab54d4.zip | |
ext4: support uncached buffered I/O
Set FOP_DONTCACHE in ext4_file_operations to declare support for
uncached buffered I/O.
To handle this flag, update ext4_write_begin() and ext4_da_write_begin()
to use write_begin_get_folio(), which encapsulates FGP_DONTCACHE logic
based on iocb->ki_flags.
Part of a series refactoring address_space_operations write_begin and
write_end callbacks to use struct kiocb for passing write context and
flags.
Signed-off-by: Taotao Chen <[email protected]>
Link: https://lore.kernel.org/[email protected]
Signed-off-by: Christian Brauner <[email protected]>
Diffstat (limited to 'fs/ext4/file.c')
| -rw-r--r-- | fs/ext4/file.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/fs/ext4/file.c b/fs/ext4/file.c index 21df81347147..274b41a476c8 100644 --- a/fs/ext4/file.c +++ b/fs/ext4/file.c @@ -977,7 +977,8 @@ const struct file_operations ext4_file_operations = { .splice_write = iter_file_splice_write, .fallocate = ext4_fallocate, .fop_flags = FOP_MMAP_SYNC | FOP_BUFFER_RASYNC | - FOP_DIO_PARALLEL_WRITE, + FOP_DIO_PARALLEL_WRITE | + FOP_DONTCACHE, }; const struct inode_operations ext4_file_inode_operations = { |