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| author | Waiman Long | 2019-01-30 19:52:36 +0100 |
|---|---|---|
| committer | Greg Kroah-Hartman | 2019-02-06 17:30:11 +0100 |
| commit | bb4e1ff5a8dde1f036e2aefcbdbe098f4098c92d (patch) | |
| tree | 41c8ba3045190f488ab3a4fc4b03d05e98690fc8 /lib/irq_poll.c | |
| parent | CIFS: Do not consider -ENODATA as stat failure for reads (diff) | |
| download | kernel-qcow2-linux-bb4e1ff5a8dde1f036e2aefcbdbe098f4098c92d.tar.gz kernel-qcow2-linux-bb4e1ff5a8dde1f036e2aefcbdbe098f4098c92d.tar.xz kernel-qcow2-linux-bb4e1ff5a8dde1f036e2aefcbdbe098f4098c92d.zip | |
fs/dcache: Fix incorrect nr_dentry_unused accounting in shrink_dcache_sb()
commit 1dbd449c9943e3145148cc893c2461b72ba6fef0 upstream.
The nr_dentry_unused per-cpu counter tracks dentries in both the LRU
lists and the shrink lists where the DCACHE_LRU_LIST bit is set.
The shrink_dcache_sb() function moves dentries from the LRU list to a
shrink list and subtracts the dentry count from nr_dentry_unused. This
is incorrect as the nr_dentry_unused count will also be decremented in
shrink_dentry_list() via d_shrink_del().
To fix this double decrement, the decrement in the shrink_dcache_sb()
function is taken out.
Fixes: 4e717f5c1083 ("list_lru: remove special case function list_lru_dispose_all."
Cc: stable@kernel.org
Signed-off-by: Waiman Long <longman@redhat.com>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/irq_poll.c')
0 files changed, 0 insertions, 0 deletions