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nilfs2: issue discard request after cleaning segments

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This adds a function to send discard requests for given array of
segment numbers, and calls the function when garbage collection
succeeded.

Signed-off-by: Jiro SEKIBA <jir@unicus.jp>
Signed-off-by: Ryusuke Konishi <konishi.ryusuke@lab.ntt.co.jp>
This commit is contained in:
Jiro SEKIBA
2010-01-30 18:06:35 +09:00
committed by Ryusuke Konishi
parent 724e6d3fe8
commit e902ec9906
6 changed files with 60 additions and 1 deletions
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include/linux/nilfs2_fs.h
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@@ -153,6 +153,7 @@ struct nilfs_super_root {
semantics also for data */
#define NILFS_MOUNT_NORECOVERY 0x4000 /* Disable write access during
mount-time recovery */
#define NILFS_MOUNT_DISCARD 0x8000 /* Issue DISCARD requests */
/**