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| author |   Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:49:35 +1100 |
|---|---|---|
| committer | Nick Piggin <npiggin@kernel.dk> | 2011-01-07 17:50:22 +1100 |
| commit | b23fb0a60379a95e10c671f646b259ea2558421e (patch) | |
| tree | 7c3644b91241d32fda502a7be0b78e4c225f8091 /fs/nfs | |
| parent | fs: dcache scale subdirs (diff) | |
| download | linux-dev-b23fb0a60379a95e10c671f646b259ea2558421e.tar.xz linux-dev-b23fb0a60379a95e10c671f646b259ea2558421e.zip | |
fs: scale inode alias list
Add a new lock, dcache_inode_lock, to protect the inode's i_dentry list
from concurrent modification. d_alias is also protected by d_lock.
Signed-off-by: Nick Piggin <npiggin@kernel.dk>
Diffstat (limited to 'fs/nfs')
| -rw-r--r-- | fs/nfs/getroot.c | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/fs/nfs/getroot.c b/fs/nfs/getroot.c index ac7b814ce162..850f67d5f0ac 100644 --- a/fs/nfs/getroot.c +++ b/fs/nfs/getroot.c @@ -64,7 +64,11 @@ static int nfs_superblock_set_dummy_root(struct super_block *sb, struct inode *i * Oops, since the test for IS_ROOT() will fail. */ spin_lock(&dcache_lock); + spin_lock(&dcache_inode_lock); + spin_lock(&sb->s_root->d_lock); list_del_init(&sb->s_root->d_alias); + spin_unlock(&sb->s_root->d_lock); + spin_unlock(&dcache_inode_lock); spin_unlock(&dcache_lock); } return 0; |