introduce __sb_writers_{acquired,release}() helpers

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Preparation to hide the sb->s_writers internals from xfs and btrfs.
Add 2 trivial define's they can use rather than play with ->s_writers
directly. No changes in btrfs/transaction.o and xfs/xfs_aops.o.

Signed-off-by: Oleg Nesterov <oleg@redhat.com>
Reviewed-by: Jan Kara <jack@suse.com>

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Oleg Nesterov 2015-07-19 23:48:20 +02:00

parent 45e38cff4f

commit bee9182d95

3 changed files with 9 additions and 10 deletions

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include/linux/fs.h

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