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| author | David Howells <dhowells@redhat.com> | 2007-05-09 02:33:45 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-05-09 12:30:50 -0700 |
| commit | 416351f28d2b31d15ff73e9aff699b2163704c95 (patch) | |
| tree | 4b43838415b2cb95dfc66f9bc5fdb36b0f245e6c /fs/afs/fsclient.c | |
| parent | ef71c15c46a053818f7e69098ebb052b31ffa56b (diff) | |
| download | linux-416351f28d2b31d15ff73e9aff699b2163704c95.tar.bz2 | |
AFS: AFS fixups
Make some miscellaneous changes to the AFS filesystem:
(1) Assert RCU barriers on module exit to make sure RCU has finished with
callbacks in this module.
(2) Correctly handle the AFS server returning a zero-length read.
(3) Split out data zapping calls into one function (afs_zap_data).
(4) Rename some afs_file_*() functions to afs_*() where they apply to
non-regular files too.
(5) Be consistent about the presentation of volume ID:vnode ID in debugging
output.
Signed-off-by: David Howells <dhowells@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/afs/fsclient.c')
| -rw-r--r-- | fs/afs/fsclient.c | 37 |
1 files changed, 20 insertions, 17 deletions
diff --git a/fs/afs/fsclient.c b/fs/afs/fsclient.c index e54e6c2ad343..1e65fee36413 100644 --- a/fs/afs/fsclient.c +++ b/fs/afs/fsclient.c @@ -206,7 +206,7 @@ int afs_fs_fetch_file_status(struct afs_server *server, struct afs_call *call; __be32 *bp; - _enter(",%x,{%x:%d},,", + _enter(",%x,{%x:%u},,", key_serial(key), vnode->fid.vid, vnode->fid.vnode); call = afs_alloc_flat_call(&afs_RXFSFetchStatus, 16, (21 + 3 + 6) * 4); @@ -265,25 +265,20 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, call->offset = 0; call->unmarshall++; - if (call->count < PAGE_SIZE) { - page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); - memset(buffer + PAGE_SIZE - call->count, 0, - call->count); - kunmap_atomic(buffer, KM_USER0); - } - /* extract the returned data */ case 2: _debug("extract data"); - page = call->reply3; - buffer = kmap_atomic(page, KM_USER0); - ret = afs_extract_data(call, skb, last, buffer, call->count); - kunmap_atomic(buffer, KM_USER0); - switch (ret) { - case 0: break; - case -EAGAIN: return 0; - default: return ret; + if (call->count > 0) { + page = call->reply3; + buffer = kmap_atomic(page, KM_USER0); + ret = afs_extract_data(call, skb, last, buffer, + call->count); + kunmap_atomic(buffer, KM_USER0); + switch (ret) { + case 0: break; + case -EAGAIN: return 0; + default: return ret; + } } call->offset = 0; @@ -318,6 +313,14 @@ static int afs_deliver_fs_fetch_data(struct afs_call *call, if (!last) return 0; + if (call->count < PAGE_SIZE) { + _debug("clear"); + page = call->reply3; + buffer = kmap_atomic(page, KM_USER0); + memset(buffer + call->count, 0, PAGE_SIZE - call->count); + kunmap_atomic(buffer, KM_USER0); + } + _leave(" = 0 [done]"); return 0; } |