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| author | Jan H. Schönherr <jschoenh@amazon.de> | 2018-01-31 16:14:04 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2018-04-26 11:02:14 +0200 |
| commit | 710b5124aac67c4a48d29e32c2d9525278db405b (patch) | |
| tree | 2bc7b16c27bf0e2555b0623c76877c89cadb7f31 /Kbuild | |
| parent | cc0600dae30fe2ca2f3783599420a1b9bb88715d (diff) | |
| download | linux-stable-710b5124aac67c4a48d29e32c2d9525278db405b.tar.gz linux-stable-710b5124aac67c4a48d29e32c2d9525278db405b.tar.bz2 linux-stable-710b5124aac67c4a48d29e32c2d9525278db405b.zip | |
fs/dax.c: release PMD lock even when there is no PMD support in DAX
[ Upstream commit ee190ca6516bc8257e3d36187ca6f0f71a9ec477 ]
follow_pte_pmd() can theoretically return after having acquired a PMD
lock, even when DAX was not compiled with CONFIG_FS_DAX_PMD.
Release the PMD lock unconditionally.
Link: http://lkml.kernel.org/r/20180118133839.20587-1-jschoenh@amazon.de
Fixes: f729c8c9b24f ("dax: wrprotect pmd_t in dax_mapping_entry_mkclean")
Signed-off-by: Jan H. Schönherr <jschoenh@amazon.de>
Reviewed-by: Ross Zwisler <ross.zwisler@linux.intel.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Matthew Wilcox <mawilcox@microsoft.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'Kbuild')
0 files changed, 0 insertions, 0 deletions