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| author | Jiro SEKIBA | 2010-01-30 10:06:35 +0100 |
|---|---|---|
| committer | Ryusuke Konishi | 2010-02-13 04:26:02 +0100 |
| commit | e902ec9906e844f4613fa6190c6fa65f162dc86e (patch) | |
| tree | ee0ea829ae04a30fb01c119f050a3967304e55ba /fs/nilfs2/super.c | |
| parent | Linux 2.6.33-rc8 (diff) | |
| download | kernel-qcow2-linux-e902ec9906e844f4613fa6190c6fa65f162dc86e.tar.gz kernel-qcow2-linux-e902ec9906e844f4613fa6190c6fa65f162dc86e.tar.xz kernel-qcow2-linux-e902ec9906e844f4613fa6190c6fa65f162dc86e.zip | |
nilfs2: issue discard request after cleaning segments
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>
Diffstat (limited to 'fs/nilfs2/super.c')
| -rw-r--r-- | fs/nilfs2/super.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/fs/nilfs2/super.c b/fs/nilfs2/super.c index 8173faee31e6..3f88401a375b 100644 --- a/fs/nilfs2/super.c +++ b/fs/nilfs2/super.c @@ -481,6 +481,8 @@ static int nilfs_show_options(struct seq_file *seq, struct vfsmount *vfs) seq_printf(seq, ",order=strict"); if (nilfs_test_opt(sbi, NORECOVERY)) seq_printf(seq, ",norecovery"); + if (nilfs_test_opt(sbi, DISCARD)) + seq_printf(seq, ",discard"); return 0; } @@ -550,7 +552,7 @@ static const struct export_operations nilfs_export_ops = { enum { Opt_err_cont, Opt_err_panic, Opt_err_ro, Opt_nobarrier, Opt_snapshot, Opt_order, Opt_norecovery, - Opt_err, + Opt_discard, Opt_err, }; static match_table_t tokens = { @@ -561,6 +563,7 @@ static match_table_t tokens = { {Opt_snapshot, "cp=%u"}, {Opt_order, "order=%s"}, {Opt_norecovery, "norecovery"}, + {Opt_discard, "discard"}, {Opt_err, NULL} }; @@ -614,6 +617,9 @@ static int parse_options(char *options, struct super_block *sb) case Opt_norecovery: nilfs_set_opt(sbi, NORECOVERY); break; + case Opt_discard: + nilfs_set_opt(sbi, DISCARD); + break; default: printk(KERN_ERR "NILFS: Unrecognized mount option \"%s\"\n", p); |