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| author | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-07 21:08:28 -0700 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-08-07 21:08:41 -0700 |
| commit | b6741d1fe947f829bd4303397fd888e1d4b66bae (patch) | |
| tree | a41c8cf58ddfd82d3083b666479a82df018297f7 /mm/truncate.c | |
| parent | acab460b0f618e1e9663eea8c52ad5edd552ed1d (diff) | |
| parent | 322a8b034003c0d46d39af85bf24fee27b902f48 (diff) | |
| download | talos-obmc-linux-b6741d1fe947f829bd4303397fd888e1d4b66bae.tar.gz talos-obmc-linux-b6741d1fe947f829bd4303397fd888e1d4b66bae.zip | |
Merge 3.1-rc1 into usb-linus
Gives us a good starting point to base patches off of.
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
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)) { |
