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fs/sync.c: remove unnecessary NULL f_mapping check in sync_file_range 

fsync codepath assumes that f_mapping can never be NULL, but
sync_file_range has a check for that.

Remove the one from sync_file_range as I don't see how you'd ever get a
NULL pointer in here.

Link: http://lkml.kernel.org/r/20170525110509.9434-1-jlayton@redhat.com
Signed-off-by: Jeff Layton <jlayton@redhat.com>
Cc: Alexander Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Jeff Layton 2017-09-06 16:23:19 -07:00 committed by Linus Torvalds
parent 824f973904
commit de23abd151
1 changed files with 0 additions and 5 deletions
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fs/sync.c
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@ -335,11 +335,6 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,
goto out_put; goto out_put;
mapping = f.file->f_mapping; mapping = f.file->f_mapping;
if (!mapping) {
ret = -EINVAL;
goto out_put;
}
ret = 0; ret = 0;
if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) { if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
ret = filemap_fdatawait_range(mapping, offset, endbyte); ret = filemap_fdatawait_range(mapping, offset, endbyte);