f2fs: introduce a shrinker for mounted fs

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This patch introduces a shrinker targeting to reduce memory footprint consumed
by a number of in-memory f2fs data structures.

In addition, it newly adds:
 - sbi->umount_mutex to avoid data races on shrinker and put_super
 - sbi->shruinker_run_no to not revisit objects

Note that the basic implementation was copied from fs/ubifs/shrinker.c

Reviewed-by: Chao Yu <chao2.yu@samsung.com>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

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This commit is contained in:

Jaegeuk Kim 2015-06-19 12:01:21 -07:00

parent 244f4fc1c5

commit 2658e50de6

4 changed files with 148 additions and 1 deletions

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1

fs/f2fs/Makefile

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13

fs/f2fs/f2fs.h

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104

fs/f2fs/shrinker.c

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31

fs/f2fs/super.c

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