Messages in this thread Patch in this message | | | From | Davidlohr Bueso <> | Subject | [PATCH 01/10] mm,fs: introduce helpers around the i_mmap_mutex | Date | Fri, 24 Oct 2014 15:06:11 -0700 |
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Various parts of the kernel acquire and release this mutex, so add i_mmap_lock_write() and immap_unlock_write() helper functions that will encapsulate this logic. The next patch will make use of these.
Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Reviewed-by: Rik van Riel <riel@redhat.com> --- include/linux/fs.h | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/include/linux/fs.h b/include/linux/fs.h index a957d43..042d5c6 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -454,6 +454,16 @@ struct block_device { int mapping_tagged(struct address_space *mapping, int tag); +static inline void i_mmap_lock_write(struct address_space *mapping) +{ + mutex_lock(&mapping->i_mmap_mutex); +} + +static inline void i_mmap_unlock_write(struct address_space *mapping) +{ + mutex_unlock(&mapping->i_mmap_mutex); +} + /* * Might pages of this file be mapped into userspace? */ -- 1.8.4.5
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