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author | John Muir <muirj@nortel.com> | 2009-05-31 11:13:57 -0400 |
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committer | Miklos Szeredi <mszeredi@suse.cz> | 2009-06-30 14:12:24 -0400 |
commit | 3b463ae0c6264f70e5d4c0a9c46af20fed43c96e (patch) | |
tree | 03c6abdd0671d74452cbd1f6fc6d637363eb6389 /include/linux/major.h | |
parent | e0a43ddcc08c34dbd666d93600fd23914505f4aa (diff) |
fuse: invalidation reverse calls
Add notification messages that allow the filesystem to invalidate VFS
caches.
Two notifications are added:
1) inode invalidation
- invalidate cached attributes
- invalidate a range of pages in the page cache (this is optional)
2) dentry invalidation
- try to invalidate a subtree in the dentry cache
Care must be taken while accessing the 'struct super_block' for the
mount, as it can go away while an invalidation is in progress. To
prevent this, introduce a rw-semaphore, that is taken for read during
the invalidation and taken for write in the ->kill_sb callback.
Cc: Csaba Henk <csaba@gluster.com>
Cc: Anand Avati <avati@zresearch.com>
Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
Diffstat (limited to 'include/linux/major.h')
0 files changed, 0 insertions, 0 deletions