From 5fb63d0ea50d73e1ca004e1dfdf799ae3de58e76 Mon Sep 17 00:00:00 2001 From: Greg Kroah-Hartman Date: Tue, 11 Nov 2014 07:05:57 +0900 Subject: [PATCH] 3.17-stable patches added patches: mm-remove-false-warn_on-from-pagecache_isize_extended.patch --- ...arn_on-from-pagecache_isize_extended.patch | 33 +++++++++++++++++++ queue-3.17/series | 1 + 2 files changed, 34 insertions(+) create mode 100644 queue-3.17/mm-remove-false-warn_on-from-pagecache_isize_extended.patch diff --git a/queue-3.17/mm-remove-false-warn_on-from-pagecache_isize_extended.patch b/queue-3.17/mm-remove-false-warn_on-from-pagecache_isize_extended.patch new file mode 100644 index 00000000000..ca57b940113 --- /dev/null +++ b/queue-3.17/mm-remove-false-warn_on-from-pagecache_isize_extended.patch @@ -0,0 +1,33 @@ +From f55fefd1a5a339b1bd08c120b93312d6eb64a9fb Mon Sep 17 00:00:00 2001 +From: Jan Kara +Date: Thu, 30 Oct 2014 10:35:00 +1100 +Subject: mm: Remove false WARN_ON from pagecache_isize_extended() + +From: Jan Kara + +commit f55fefd1a5a339b1bd08c120b93312d6eb64a9fb upstream. + +The WARN_ON checking whether i_mutex is held in +pagecache_isize_extended() was wrong because some filesystems (e.g. +XFS) use different locks for serialization of truncates / writes. So +just remove the check. + +Signed-off-by: Jan Kara +Reviewed-by: Dave Chinner +Signed-off-by: Dave Chinner +Signed-off-by: Greg Kroah-Hartman + +--- + mm/truncate.c | 1 - + 1 file changed, 1 deletion(-) + +--- a/mm/truncate.c ++++ b/mm/truncate.c +@@ -755,7 +755,6 @@ void pagecache_isize_extended(struct ino + struct page *page; + pgoff_t index; + +- WARN_ON(!mutex_is_locked(&inode->i_mutex)); + WARN_ON(to > inode->i_size); + + if (from >= to || bsize == PAGE_CACHE_SIZE) diff --git a/queue-3.17/series b/queue-3.17/series index 293f35a63be..cee2c03682d 100644 --- a/queue-3.17/series +++ b/queue-3.17/series @@ -273,3 +273,4 @@ mac80211-fix-typo-in-starting-baserate-for-rts_cts_rate_idx.patch mtd-cfi_cmdset_0001.c-fix-resume-for-lh28f640bf-chips.patch posix-timers-fix-stack-info-leak-in-timer_create.patch x86-apic-handle-a-bad-tsc-more-gracefully.patch +mm-remove-false-warn_on-from-pagecache_isize_extended.patch -- 2.47.3