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authorJeff Layton <jlayton@redhat.com>2017-09-06 16:23:19 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2017-09-06 17:27:28 -0700
commitde23abd15175fb170270d485f267caebe86fb0b4 (patch)
treedca2db2b3df4fb7b47b0e32f48baedcdd7ad0391
parent824f973904a1108806fa0fbe15dc93ee9ecd9e0a (diff)
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>
-rw-r--r--fs/sync.c5
1 files changed, 0 insertions, 5 deletions
diff --git a/fs/sync.c b/fs/sync.c
index 2a54c1f22035..cf57f33fcd16 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -335,11 +335,6 @@ SYSCALL_DEFINE4(sync_file_range, int, fd, loff_t, offset, loff_t, nbytes,
goto out_put;
mapping = f.file->f_mapping;
- if (!mapping) {
- ret = -EINVAL;
- goto out_put;
- }
-
ret = 0;
if (flags & SYNC_FILE_RANGE_WAIT_BEFORE) {
ret = filemap_fdatawait_range(mapping, offset, endbyte);