The patch titled
Subject: fs/sync.c: remove unnecessary NULL f_mapping check in sync_file_range
has been added to the -mm tree. Its filename is
fs-remove-unnecessary-null-f_mapping-check-in-sync_file_range.patch
This patch should soon appear at
http://ozlabs.org/~akpm/mmots/broken-out/fs-remove-unnecessary-null-f_mapping-check-in-sync_file_range.patch
and later at
http://ozlabs.org/~akpm/mmotm/broken-out/fs-remove-unnecessary-null-f_mapping-check-in-sync_file_range.patch
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------------------------------------------------------
From: Jeff Layton <jlayton@xxxxxxxxxx>
Subject: 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@xxxxxxxxxx
Signed-off-by: Jeff Layton <jlayton@xxxxxxxxxx>
Cc: Alexander Viro <viro@xxxxxxxxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
fs/sync.c | 5 -----
1 file changed, 5 deletions(-)
diff -puN fs/sync.c~fs-remove-unnecessary-null-f_mapping-check-in-sync_file_range fs/sync.c
--- a/fs/sync.c~fs-remove-unnecessary-null-f_mapping-check-in-sync_file_range
+++ a/fs/sync.c
@@ -335,11 +335,6 @@ SYSCALL_DEFINE4(sync_file_range, int, fd
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);
_
Patches currently in -mm which might be from jlayton@xxxxxxxxxx are
fs-remove-unnecessary-null-f_mapping-check-in-sync_file_range.patch
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