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| author | Amir Goldstein <amir73il@gmail.com> | 2017-01-31 10:34:57 +0200 |
|---|---|---|
| committer | Miklos Szeredi <mszeredi@redhat.com> | 2017-02-07 15:05:04 +0100 |
| commit | bfe219d373cadab761373aeea4c70406bc27ea2c (patch) | |
| tree | 781b1664565d45394b4272cc783932b857de67cf /fs/read_write.c | |
| parent | 11cbfb10775aa2a01cee966d118049ede9d0bdf2 (diff) | |
| download | lwn-bfe219d373cadab761373aeea4c70406bc27ea2c.tar.gz lwn-bfe219d373cadab761373aeea4c70406bc27ea2c.zip | |
vfs: wrap write f_ops with file_{start,end}_write()
Before calling write f_ops, call file_start_write() instead
of sb_start_write().
Replace {sb,file}_start_write() for {copy,clone}_file_range() and
for fallocate().
Beyond correct semantics, this avoids freeze protection to sb when
operating on special inodes, such as fallocate() on a blockdev.
Reviewed-by: Jan Kara <jack@suse.cz>
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Miklos Szeredi <mszeredi@redhat.com>
Diffstat (limited to 'fs/read_write.c')
| -rw-r--r-- | fs/read_write.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/fs/read_write.c b/fs/read_write.c index 511178d7723b..820a3f06c46a 100644 --- a/fs/read_write.c +++ b/fs/read_write.c @@ -1543,7 +1543,7 @@ ssize_t vfs_copy_file_range(struct file *file_in, loff_t pos_in, if (len == 0) return 0; - sb_start_write(inode_out->i_sb); + file_start_write(file_out); /* * Try cloning first, this is supported by more file systems, and @@ -1579,7 +1579,7 @@ done: inc_syscr(current); inc_syscw(current); - sb_end_write(inode_out->i_sb); + file_end_write(file_out); return ret; } |