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authorGravatar John W. Linville <linville@tuxdriver.com> 2012-02-15 16:24:37 -0500
committerGravatar John W. Linville <linville@tuxdriver.com> 2012-02-15 16:24:37 -0500
commitca994a36f585432458ead9133fcfe05440edbb7b (patch)
treebe05512153a9cd5cbe1f1234bc09fd9cd388ec58 /Documentation/filesystems/ceph.txt
parentrtlwifi: Modify rtl_pci_init to return 0 on success (diff)
parentath9k: stop on rates with idx -1 in ath9k rate control's .tx_status (diff)
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Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/linville/wireless
Conflicts: net/mac80211/debugfs_sta.c net/mac80211/sta_info.h
Diffstat (limited to 'Documentation/filesystems/ceph.txt')
-rw-r--r--Documentation/filesystems/ceph.txt18
1 files changed, 13 insertions, 5 deletions
diff --git a/Documentation/filesystems/ceph.txt b/Documentation/filesystems/ceph.txt
index 763d8ebbbebd..d6030aa33376 100644
--- a/Documentation/filesystems/ceph.txt
+++ b/Documentation/filesystems/ceph.txt
@@ -119,12 +119,20 @@ Mount Options
must rely on TCP's error correction to detect data corruption
in the data payload.
- noasyncreaddir
- Disable client's use its local cache to satisfy readdir
- requests. (This does not change correctness; the client uses
- cached metadata only when a lease or capability ensures it is
- valid.)
+ dcache
+ Use the dcache contents to perform negative lookups and
+ readdir when the client has the entire directory contents in
+ its cache. (This does not change correctness; the client uses
+ cached metadata only when a lease or capability ensures it is
+ valid.)
+
+ nodcache
+ Do not use the dcache as above. This avoids a significant amount of
+ complex code, sacrificing performance without affecting correctness,
+ and is useful for tracking down bugs.
+ noasyncreaddir
+ Do not use the dcache as above for readdir.
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