A-Team_Digital_Solutions/android_kernel_motorola_sm6375
Watch
2
0
Fork
You've already forked android_kernel_motorola_sm6375
 0
mirror of https://github.com/BobTheBlinker/android_kernel_motorola_sm6375.git synced 2026-10-29 03:01:39 -04:00
Code Issues Projects Releases Packages Wiki Activity

mm/truncate: avoid pointless cleancache_invalidate_inode() calls.

Browse source 
cleancache_invalidate_inode() called truncate_inode_pages_range() and
invalidate_inode_pages2_range() twice - on entry and on exit.  It's
stupid and waste of time.  It's enough to call it once at exit.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Andrey Ryabinin <[email protected]>
Reviewed-by: Jan Kara <[email protected]>
Acked-by: Konrad Rzeszutek Wilk <[email protected]>
Cc: Alexander Viro <[email protected]>
Cc: Ross Zwisler <[email protected]>
Cc: Jens Axboe <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Alexey Kuznetsov <[email protected]>
Cc: Christoph Hellwig <[email protected]>
Cc: Nikolay Borisov <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Andrey Ryabinin 2017-05-03 14:56:09 -07:00 • committed by Linus Torvalds
commit 34ccb69ea2
1 changed files with 7 additions and 5 deletions
Download patch file Download diff file Expand all files Collapse all files

12
mm/truncate.c
View file

@ -266,9 +266,8 @@ void truncate_inode_pages_range(struct address_space *mapping,
pgoff_t index;
int i;
cleancache_invalidate_inode(mapping);
if (mapping->nrpages == 0 && mapping->nrexceptional == 0)
return;
goto out;
/* Offsets within partial pages */
partial_start = lstart & (PAGE_SIZE - 1);
@ -363,7 +362,7 @@ void truncate_inode_pages_range(struct address_space *mapping,
* will be released, just zeroed, so we can bail out now.
*/
if (start >= end)
return;
goto out;
index = start;
for ( ; ; ) {
@ -410,6 +409,8 @@ void truncate_inode_pages_range(struct address_space *mapping,
pagevec_release(&pvec);
index++;
}
out:
cleancache_invalidate_inode(mapping);
}
EXPORT_SYMBOL(truncate_inode_pages_range);
@ -623,9 +624,8 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
int ret2 = 0;
int did_range_unmap = 0;
cleancache_invalidate_inode(mapping);
if (mapping->nrpages == 0 && mapping->nrexceptional == 0)
return 0;
goto out;
pagevec_init(&pvec, 0);
index = start;
@ -689,6 +689,8 @@ int invalidate_inode_pages2_range(struct address_space *mapping,
cond_resched();
index++;
}
out:
cleancache_invalidate_inode(mapping);
return ret;
}