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authorLinus Torvalds <torvalds@linux-foundation.org>2010-08-07 13:10:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2010-08-07 13:10:55 -0700
commita57f9a3e811cf1246b394f0cc667c6bc5a52e099 (patch)
tree488b4dd7cd061e7e0e059acb8443967e21051aab /Documentation/filesystems
parent09dc942c2a767e2d298f1cc9294bc19c7d7208c5 (diff)
parent89c0fd014d34d409a7b196667c2b9a4813b6c968 (diff)
Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/ryusuke/nilfs2: (45 commits) nilfs2: reject filesystem with unsupported block size nilfs2: avoid rec_len overflow with 64KB block size nilfs2: simplify nilfs_get_page function nilfs2: reject incompatible filesystem nilfs2: add feature set fields to super block nilfs2: clarify byte offset in super block format nilfs2: apply read-ahead for nilfs_btree_lookup_contig nilfs2: introduce check flag to btree node buffer nilfs2: add btree get block function with readahead option nilfs2: add read ahead mode to nilfs_btnode_submit_block nilfs2: fix buffer head leak in nilfs_btnode_submit_block nilfs2: eliminate inline keywords in btree implementation nilfs2: get maximum number of child nodes from bmap object nilfs2: reduce repetitive calculation of max number of child nodes nilfs2: optimize calculation of min/max number of btree node children nilfs2: remove redundant pointer checks in bmap lookup functions nilfs2: get rid of nilfs_bmap_union nilfs2: unify bmap set_target_v operations nilfs2: get rid of nilfs_btree uses nilfs2: get rid of nilfs_direct uses ...
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/nilfs2.txt12
1 files changed, 8 insertions, 4 deletions
diff --git a/Documentation/filesystems/nilfs2.txt b/Documentation/filesystems/nilfs2.txt
index d3e7673995e..d5c0cef38a7 100644
--- a/Documentation/filesystems/nilfs2.txt
+++ b/Documentation/filesystems/nilfs2.txt
@@ -49,7 +49,10 @@ Mount options
NILFS2 supports the following mount options:
(*) == default
-nobarrier Disables barriers.
+barrier(*) This enables/disables the use of write barriers. This
+nobarrier requires an IO stack which can support barriers, and
+ if nilfs gets an error on a barrier write, it will
+ disable again with a warning.
errors=continue Keep going on a filesystem error.
errors=remount-ro(*) Remount the filesystem read-only on an error.
errors=panic Panic and halt the machine if an error occurs.
@@ -74,9 +77,10 @@ norecovery Disable recovery of the filesystem on mount.
This disables every write access on the device for
read-only mounts or snapshots. This option will fail
for r/w mounts on an unclean volume.
-discard Issue discard/TRIM commands to the underlying block
- device when blocks are freed. This is useful for SSD
- devices and sparse/thinly-provisioned LUNs.
+discard This enables/disables the use of discard/TRIM commands.
+nodiscard(*) The discard/TRIM commands are sent to the underlying
+ block device when blocks are freed. This is useful
+ for SSD devices and sparse/thinly-provisioned LUNs.
NILFS2 usage
============