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authorJiri Kosina <jkosina@suse.cz>2010-12-10 15:19:18 +0100
committerJiri Kosina <jkosina@suse.cz>2010-12-10 15:19:18 +0100
commit2ade0c1d9d93b7642212657ef76f4a1e30233711 (patch)
tree63bc720c0ffe5f4760cac4ed617b9870b050175e /Documentation/filesystems/ext4.txt
parent504499f22c08a03e2e19dc88d31aa0ecd2ac815e (diff)
parent6313e3c21743cc88bb5bd8aa72948ee1e83937b6 (diff)
Merge branch 'master' into upstream
Diffstat (limited to 'Documentation/filesystems/ext4.txt')
-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