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| author | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 17:08:05 +0400 |
|---|---|---|
| committer | Jiri Kosina <jkosina@suse.cz> | 2011-09-15 17:08:18 +0400 |
| commit | e060c38434b2caa78efe7cedaff4191040b65a15 (patch) | |
| tree | 407361230bf6733f63d8e788e4b5e6566ee04818 /mm/truncate.c | |
| parent | 10e4ac572eeffe5317019bd7330b6058a400dfc2 (diff) | |
| parent | cc39c6a9bbdebfcf1a7dee64d83bf302bc38d941 (diff) | |
| download | linux-e060c38434b2caa78efe7cedaff4191040b65a15.tar.xz | |
Merge branch 'master' into for-next
Fast-forward merge with Linus to be able to merge patches
based on more recent version of the tree.
Diffstat (limited to 'mm/truncate.c')
| -rw-r--r-- | mm/truncate.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/mm/truncate.c b/mm/truncate.c index 232eb2736a79..b40ac6d4e86e 100644 --- a/mm/truncate.c +++ b/mm/truncate.c @@ -336,6 +336,14 @@ unsigned long invalidate_mapping_pages(struct address_space *mapping, unsigned long count = 0; int i; + /* + * Note: this function may get called on a shmem/tmpfs mapping: + * pagevec_lookup() might then return 0 prematurely (because it + * got a gangful of swap entries); but it's hardly worth worrying + * about - it can rarely have anything to free from such a mapping + * (most pages are dirty), and already skips over any difficulties. + */ + pagevec_init(&pvec, 0); while (index <= end && pagevec_lookup(&pvec, mapping, index, min(end - index, (pgoff_t)PAGEVEC_SIZE - 1) + 1)) { |