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| author | Omar Sandoval <osandov@fb.com> | 2021-08-13 01:34:57 +0300 |
|---|---|---|
| committer | David Sterba <dsterba@suse.com> | 2022-03-14 15:13:50 +0300 |
| commit | f6f7a25a650818c61defa97d60a79b216618315f (patch) | |
| tree | 9e347008104e54d5ab694e8dc0e941d54ff852fc /include | |
| parent | 871129332d74c9e94bd110932ac4445833995639 (diff) | |
| download | linux-f6f7a25a650818c61defa97d60a79b216618315f.tar.xz | |
fs: export variant of generic_write_checks without iov_iter
Encoded I/O in Btrfs needs to check a write with a given logical size
without an iov_iter that matches that size (because the iov_iter we have
is for the compressed data). So, factor out the parts of
generic_write_check() that don't need an iov_iter into a new
generic_write_checks_count() function and export that.
Reviewed-by: Nikolay Borisov <nborisov@suse.com>
Signed-off-by: Omar Sandoval <osandov@fb.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/fs.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/fs.h b/include/linux/fs.h index 0ebfc2519212..27746a3da8fd 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -3130,6 +3130,7 @@ extern int sb_min_blocksize(struct super_block *, int); extern int generic_file_mmap(struct file *, struct vm_area_struct *); extern int generic_file_readonly_mmap(struct file *, struct vm_area_struct *); extern ssize_t generic_write_checks(struct kiocb *, struct iov_iter *); +int generic_write_checks_count(struct kiocb *iocb, loff_t *count); extern int generic_write_check_limits(struct file *file, loff_t pos, loff_t *count); extern int generic_file_rw_checks(struct file *file_in, struct file *file_out); |