diff options
| author | Miklos Szeredi <miklos@szeredi.hu> | 2006-07-30 03:04:10 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-07-31 13:28:43 -0700 |
| commit | 0a0898cf413876d4ed6e371f3e04bf38600a9205 (patch) | |
| tree | 700c9e87bdd78392bd3fa11f2f976d360b8a5cd2 /fs/fuse/fuse_i.h | |
| parent | 685d16ddb07b74537fb18972784e6214840fdd20 (diff) | |
| download | lwn-0a0898cf413876d4ed6e371f3e04bf38600a9205.tar.gz lwn-0a0898cf413876d4ed6e371f3e04bf38600a9205.zip | |
[PATCH] fuse: use jiffies_64
It is entirely possible (though rare) that jiffies half-wraps around, while a
dentry/inode remains in the cache. This could mean that the dentry/inode is
not invalidated for another half wraparound-time.
To get around this problem, use 64-bit jiffies. The only problem with this is
that dentry->d_time is 32 bits on 32-bit archs. So use d_fsdata as the high
32 bits. This is an ugly hack, but far simpler, than having to allocate
private data just for this purpose.
Since 64-bit jiffies can be assumed never to wrap around, simple comparison
can be used, and a zero time value can represent "invalid".
Signed-off-by: Miklos Szeredi <miklos@szeredi.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'fs/fuse/fuse_i.h')
| -rw-r--r-- | fs/fuse/fuse_i.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/fuse/fuse_i.h b/fs/fuse/fuse_i.h index 0dbf96621841..69c7750d55b8 100644 --- a/fs/fuse/fuse_i.h +++ b/fs/fuse/fuse_i.h @@ -59,7 +59,7 @@ struct fuse_inode { struct fuse_req *forget_req; /** Time in jiffies until the file attributes are valid */ - unsigned long i_time; + u64 i_time; }; /** FUSE specific file data */ |