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authorTheodore Ts'o <tytso@mit.edu>2010-10-27 23:44:47 -0400
committerTheodore Ts'o <tytso@mit.edu>2010-10-27 23:44:47 -0400
commita107e5a3a473a2ea62bd5af24e11b84adf1486ff (patch)
treed36c2cb38d8be88d4d75cdebc354aa140aa0e470 /Documentation/filesystems
parente3e1288e86a07cdeb0aee5860a2dff111c6eff79 (diff)
parenta269029d0e2192046be4c07ed78a45022469ee4c (diff)
Merge branch 'next' into upstream-merge
Conflicts: fs/ext4/inode.c fs/ext4/mballoc.c include/trace/events/ext4.h
Diffstat (limited to 'Documentation/filesystems')
-rw-r--r--Documentation/filesystems/ext4.txt14
1 files changed, 14 insertions, 0 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index e1def1786e50..6ab9442d7eeb 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -353,6 +353,20 @@ noauto_da_alloc replacing existing files via patterns such as
system crashes before the delayed allocation
blocks are forced to disk.
+noinit_itable Do not initialize any uninitialized inode table
+ blocks in the background. This feature may be
+ used by installation CD's so that the install
+ process can complete as quickly as possible; the
+ inode table initialization process would then be
+ deferred until the next time the file system
+ is unmounted.
+
+init_itable=n The lazy itable init code will wait n times the
+ number of milliseconds it took to zero out the
+ previous block group's inode table. This
+ minimizes the impact on the systme performance
+ while file system's inode table is being initialized.
+
discard Controls whether ext4 should issue discard/TRIM
nodiscard(*) commands to the underlying block device when
blocks are freed. This is useful for SSD devices