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| author | Christian Brauner <brauner@kernel.org> | 2025-07-16 14:48:24 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-07-16 14:48:24 +0200 |
| commit | 981569a06f704ac9c4eed249f47426e1be1a5636 (patch) | |
| tree | 0ec8d85041debe49759630d4124c2dd3c164dcab /fs/udf/inode.c | |
| parent | f2e467a48287c868818085aa35389a224d226732 (diff) | |
| parent | ae21c0c0ac56aa734327e9c8b7dfef4270ab54d4 (diff) | |
Merge patch series "fs: refactor write_begin/write_end and add ext4 IOCB_DONTCACHE support"
陈涛涛 Taotao Chen <chentaotao@didiglobal.com> says:
This patch series refactors the address_space_operations write_begin()
and write_end() callbacks to take const struct kiocb * as their first
argument, allowing IOCB flags such as IOCB_DONTCACHE to propagate to the
filesystem's buffered I/O path.
Ext4 is updated to implement handling of the IOCB_DONTCACHE flag and
advertises support via the FOP_DONTCACHE file operation flag.
Additionally, the i915 driver's shmem write paths are updated to bypass
the legacy write_begin/write_end interface in favor of directly
calling write_iter() with a constructed synchronous kiocb. Another i915
change replaces a manual write loop with kernel_write() during GEM shmem
object creation.
Tested with ext4 and i915 GEM workloads.
* patches from https://lore.kernel.org/20250716093559.217344-1-chentaotao@didiglobal.com:
ext4: support uncached buffered I/O
mm/pagemap: add write_begin_get_folio() helper function
fs: change write_begin/write_end interface to take struct kiocb *
drm/i915: Refactor shmem_pwrite() to use kiocb and write_iter
drm/i915: Use kernel_write() in shmem object create
Link: https://lore.kernel.org/20250716093559.217344-1-chentaotao@didiglobal.com
Signed-off-by: Christian Brauner <brauner@kernel.org>
Diffstat (limited to 'fs/udf/inode.c')
| -rw-r--r-- | fs/udf/inode.c | 11 |
1 files changed, 7 insertions, 4 deletions
diff --git a/fs/udf/inode.c b/fs/udf/inode.c index 4386dd845e40..356b75676fa9 100644 --- a/fs/udf/inode.c +++ b/fs/udf/inode.c @@ -244,10 +244,12 @@ static void udf_readahead(struct readahead_control *rac) mpage_readahead(rac, udf_get_block); } -static int udf_write_begin(struct file *file, struct address_space *mapping, +static int udf_write_begin(const struct kiocb *iocb, + struct address_space *mapping, loff_t pos, unsigned len, struct folio **foliop, void **fsdata) { + struct file *file = iocb->ki_filp; struct udf_inode_info *iinfo = UDF_I(file_inode(file)); struct folio *folio; int ret; @@ -271,15 +273,16 @@ static int udf_write_begin(struct file *file, struct address_space *mapping, return 0; } -static int udf_write_end(struct file *file, struct address_space *mapping, +static int udf_write_end(const struct kiocb *iocb, + struct address_space *mapping, loff_t pos, unsigned len, unsigned copied, struct folio *folio, void *fsdata) { - struct inode *inode = file_inode(file); + struct inode *inode = file_inode(iocb->ki_filp); loff_t last_pos; if (UDF_I(inode)->i_alloc_type != ICBTAG_FLAG_AD_IN_ICB) - return generic_write_end(file, mapping, pos, len, copied, folio, + return generic_write_end(iocb, mapping, pos, len, copied, folio, fsdata); last_pos = pos + copied; if (last_pos > inode->i_size) |