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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2025-07-28 11:22:56 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2025-07-28 11:22:56 -0700 |
| commit | 7879d7aff0ffd969fcb1a59e3f87ebb353e47b7f (patch) | |
| tree | 68885c284e839620d1d0366fde8a13367161c600 /fs/buffer.c | |
| parent | 794cbac9c053155754d04231b9365f91ea4ce7d2 (diff) | |
| parent | 4e8fc4f7208b032674ef8a4977b96484c328515c (diff) | |
| download | tip-7879d7aff0ffd969fcb1a59e3f87ebb353e47b7f.tar.gz | |
Merge tag 'vfs-6.17-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs
Pull misc VFS updates from Christian Brauner:
"This contains the usual selections of misc updates for this cycle.
Features:
- Add ext4 IOCB_DONTCACHE support
This 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.
Cleanups:
- don't duplicate vfs_open() in kernel_file_open()
- proc_fd_getattr(): don't bother with S_ISDIR() check
- fs/ecryptfs: replace snprintf with sysfs_emit in show function
- vfs: Remove unnecessary list_for_each_entry_safe() from
evict_inodes()
- filelock: add new locks_wake_up_waiter() helper
- fs: Remove three arguments from block_write_end()
- VFS: change old_dir and new_dir in struct renamedata to dentrys
- netfs: Remove unused declaration netfs_queue_write_request()
Fixes:
- eventpoll: Fix semi-unbounded recursion
- eventpoll: fix sphinx documentation build warning
- fs/read_write: Fix spelling typo
- fs: annotate data race between poll_schedule_timeout() and
pollwake()
- fs/pipe: set FMODE_NOWAIT in create_pipe_files()
- docs/vfs: update references to i_mutex to i_rwsem
- fs/buffer: remove comment about hard sectorsize
- fs/buffer: remove the min and max limit checks in __getblk_slow()
- fs/libfs: don't assume blocksize <= PAGE_SIZE in
generic_check_addressable
- fs_context: fix parameter name in infofc() macro
- fs: Prevent file descriptor table allocations exceeding INT_MAX"
* tag 'vfs-6.17-rc1.misc' of git://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs: (24 commits)
netfs: Remove unused declaration netfs_queue_write_request()
eventpoll: fix sphinx documentation build warning
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
eventpoll: Fix semi-unbounded recursion
vfs: Remove unnecessary list_for_each_entry_safe() from evict_inodes()
fs/libfs: don't assume blocksize <= PAGE_SIZE in generic_check_addressable
fs/buffer: remove the min and max limit checks in __getblk_slow()
fs: Prevent file descriptor table allocations exceeding INT_MAX
fs: Remove three arguments from block_write_end()
fs/ecryptfs: replace snprintf with sysfs_emit in show function
fs: annotate suspected data race between poll_schedule_timeout() and pollwake()
docs/vfs: update references to i_mutex to i_rwsem
fs/buffer: remove comment about hard sectorsize
fs_context: fix parameter name in infofc() macro
VFS: change old_dir and new_dir in struct renamedata to dentrys
proc_fd_getattr(): don't bother with S_ISDIR() check
...
Diffstat (limited to 'fs/buffer.c')
| -rw-r--r-- | fs/buffer.c | 47 |
1 files changed, 20 insertions, 27 deletions
diff --git a/fs/buffer.c b/fs/buffer.c index 8cf4a1dc481eb1..ead4dc85debdd6 100644 --- a/fs/buffer.c +++ b/fs/buffer.c @@ -1122,15 +1122,9 @@ __getblk_slow(struct block_device *bdev, sector_t block, { bool blocking = gfpflags_allow_blocking(gfp); - /* Size must be multiple of hard sectorsize */ - if (unlikely(size & (bdev_logical_block_size(bdev)-1) || - (size < 512 || size > PAGE_SIZE))) { - printk(KERN_ERR "getblk(): invalid block size %d requested\n", - size); - printk(KERN_ERR "logical block size: %d\n", - bdev_logical_block_size(bdev)); - - dump_stack(); + if (WARN_ON_ONCE(!IS_ALIGNED(size, bdev_logical_block_size(bdev)))) { + printk(KERN_ERR "getblk(): block size %d not aligned to logical block size %d\n", + size, bdev_logical_block_size(bdev)); return NULL; } @@ -2271,9 +2265,8 @@ int block_write_begin(struct address_space *mapping, loff_t pos, unsigned len, } EXPORT_SYMBOL(block_write_begin); -int block_write_end(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct folio *folio, void *fsdata) +int block_write_end(loff_t pos, unsigned len, unsigned copied, + struct folio *folio) { size_t start = pos - folio_pos(folio); @@ -2304,15 +2297,15 @@ int block_write_end(struct file *file, struct address_space *mapping, } EXPORT_SYMBOL(block_write_end); -int generic_write_end(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, unsigned copied, - struct folio *folio, void *fsdata) +int generic_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 = mapping->host; loff_t old_size = inode->i_size; bool i_size_changed = false; - copied = block_write_end(file, mapping, pos, len, copied, folio, fsdata); + copied = block_write_end(pos, len, copied, folio); /* * No need to use i_size_read() here, the i_size cannot change under us @@ -2501,7 +2494,8 @@ out: } EXPORT_SYMBOL(generic_cont_expand_simple); -static int cont_expand_zero(struct file *file, struct address_space *mapping, +static int cont_expand_zero(const struct kiocb *iocb, + struct address_space *mapping, loff_t pos, loff_t *bytes) { struct inode *inode = mapping->host; @@ -2525,12 +2519,12 @@ static int cont_expand_zero(struct file *file, struct address_space *mapping, } len = PAGE_SIZE - zerofrom; - err = aops->write_begin(file, mapping, curpos, len, + err = aops->write_begin(iocb, mapping, curpos, len, &folio, &fsdata); if (err) goto out; folio_zero_range(folio, offset_in_folio(folio, curpos), len); - err = aops->write_end(file, mapping, curpos, len, len, + err = aops->write_end(iocb, mapping, curpos, len, len, folio, fsdata); if (err < 0) goto out; @@ -2558,12 +2552,12 @@ static int cont_expand_zero(struct file *file, struct address_space *mapping, } len = offset - zerofrom; - err = aops->write_begin(file, mapping, curpos, len, + err = aops->write_begin(iocb, mapping, curpos, len, &folio, &fsdata); if (err) goto out; folio_zero_range(folio, offset_in_folio(folio, curpos), len); - err = aops->write_end(file, mapping, curpos, len, len, + err = aops->write_end(iocb, mapping, curpos, len, len, folio, fsdata); if (err < 0) goto out; @@ -2578,17 +2572,16 @@ out: * For moronic filesystems that do not allow holes in file. * We may have to extend the file. */ -int cont_write_begin(struct file *file, struct address_space *mapping, - loff_t pos, unsigned len, - struct folio **foliop, void **fsdata, - get_block_t *get_block, loff_t *bytes) +int cont_write_begin(const struct kiocb *iocb, struct address_space *mapping, + loff_t pos, unsigned len, struct folio **foliop, + void **fsdata, get_block_t *get_block, loff_t *bytes) { struct inode *inode = mapping->host; unsigned int blocksize = i_blocksize(inode); unsigned int zerofrom; int err; - err = cont_expand_zero(file, mapping, pos, bytes); + err = cont_expand_zero(iocb, mapping, pos, bytes); if (err) return err; @@ -2610,7 +2603,7 @@ EXPORT_SYMBOL(cont_write_begin); * holes and correct delalloc and unwritten extent mapping on filesystems that * support these features. * - * We are not allowed to take the i_mutex here so we have to play games to + * We are not allowed to take the i_rwsem here so we have to play games to * protect against truncate races as the page could now be beyond EOF. Because * truncate writes the inode size before removing pages, once we have the * page lock we can determine safely if the page is beyond EOF. If it is not |