diff options
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r-- | Documentation/filesystems/dentry-locking.txt | 3 | ||||
-rw-r--r-- | Documentation/filesystems/nilfs2.txt | 3 |
2 files changed, 5 insertions, 1 deletions
diff --git a/Documentation/filesystems/dentry-locking.txt b/Documentation/filesystems/dentry-locking.txt index 4c0c575a4012..79334ed5daa7 100644 --- a/Documentation/filesystems/dentry-locking.txt +++ b/Documentation/filesystems/dentry-locking.txt | |||
@@ -62,7 +62,8 @@ changes are : | |||
62 | 2. Insertion of a dentry into the hash table is done using | 62 | 2. Insertion of a dentry into the hash table is done using |
63 | hlist_add_head_rcu() which take care of ordering the writes - the | 63 | hlist_add_head_rcu() which take care of ordering the writes - the |
64 | writes to the dentry must be visible before the dentry is | 64 | writes to the dentry must be visible before the dentry is |
65 | inserted. This works in conjunction with hlist_for_each_rcu() while | 65 | inserted. This works in conjunction with hlist_for_each_rcu(), |
66 | which has since been replaced by hlist_for_each_entry_rcu(), while | ||
66 | walking the hash chain. The only requirement is that all | 67 | walking the hash chain. The only requirement is that all |
67 | initialization to the dentry must be done before | 68 | initialization to the dentry must be done before |
68 | hlist_add_head_rcu() since we don't have dcache_lock protection | 69 | hlist_add_head_rcu() since we don't have dcache_lock protection |
diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt index 839efd8a8a8c..cf6d0d85ca82 100644 --- a/Documentation/filesystems/nilfs2.txt +++ b/Documentation/filesystems/nilfs2.txt | |||
@@ -74,6 +74,9 @@ norecovery Disable recovery of the filesystem on mount. | |||
74 | This disables every write access on the device for | 74 | This disables every write access on the device for |
75 | read-only mounts or snapshots. This option will fail | 75 | read-only mounts or snapshots. This option will fail |
76 | for r/w mounts on an unclean volume. | 76 | for r/w mounts on an unclean volume. |
77 | discard Issue discard/TRIM commands to the underlying block | ||
78 | device when blocks are freed. This is useful for SSD | ||
79 | devices and sparse/thinly-provisioned LUNs. | ||
77 | 80 | ||
78 | NILFS2 usage | 81 | NILFS2 usage |
79 | ============ | 82 | ============ |