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authorLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 13:56:26 -0400
committerLinus Torvalds <torvalds@linux-foundation.org>2009-09-18 13:56:26 -0400
commit3530c1886291df061e3972c55590777ef1cb67f8 (patch)
treebd6755e533eb5a0f37ff600da6bc0d9d1ba33c17 /Documentation
parent6952b61de9984073289859073e8195ad0bee8fd5 (diff)
parent1358870deaf11a752a84fbd89201749aa62498e8 (diff)
Merge branch 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4
* 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tytso/ext4: (64 commits) ext4: Update documentation about quota mount options ext4: replace MAX_DEFRAG_SIZE with EXT_MAX_BLOCK ext4: Fix the alloc on close after a truncate hueristic ext4: Add a tracepoint for ext4_alloc_da_blocks() ext4: store EXT4_EXT_MIGRATE in i_state instead of i_flags ext4: limit block allocations for indirect-block files to < 2^32 ext4: Fix different block exchange issue in EXT4_IOC_MOVE_EXT ext4: Add null extent check to ext_get_path ext4: Replace BUG_ON() with ext4_error() in move_extents.c ext4: Replace get_ext_path macro with an inline funciton ext4: Fix include/trace/events/ext4.h to work with Systemtap ext4: Fix initalization of s_flex_groups ext4: Always set dx_node's fake_dirent explicitly. ext4: Fix async commit mode to be safe by using a barrier ext4: Don't update superblock write time when filesystem is read-only ext4: Clarify the locking details in mballoc ext4: check for need init flag in ext4_mb_load_buddy ext4: move ext4_mb_init_group() function earlier in the mballoc.c ext4: Make non-journal fsync work properly ext4: Assure that metadata blocks are written during fsync in no journal mode ...
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/filesystems/ext4.txt24
1 files changed, 13 insertions, 11 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 7be02ac5fa36..18b5ec8cea45 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -134,15 +134,9 @@ ro Mount filesystem read only. Note that ext4 will
134 mount options "ro,noload" can be used to prevent 134 mount options "ro,noload" can be used to prevent
135 writes to the filesystem. 135 writes to the filesystem.
136 136
137journal_checksum Enable checksumming of the journal transactions.
138 This will allow the recovery code in e2fsck and the
139 kernel to detect corruption in the kernel. It is a
140 compatible change and will be ignored by older kernels.
141
142journal_async_commit Commit block can be written to disk without waiting 137journal_async_commit Commit block can be written to disk without waiting
143 for descriptor blocks. If enabled older kernels cannot 138 for descriptor blocks. If enabled older kernels cannot
144 mount the device. This will enable 'journal_checksum' 139 mount the device.
145 internally.
146 140
147journal=update Update the ext4 file system's journal to the current 141journal=update Update the ext4 file system's journal to the current
148 format. 142 format.
@@ -263,10 +257,18 @@ resuid=n The user ID which may use the reserved blocks.
263 257
264sb=n Use alternate superblock at this location. 258sb=n Use alternate superblock at this location.
265 259
266quota 260quota These options are ignored by the filesystem. They
267noquota 261noquota are used only by quota tools to recognize volumes
268grpquota 262grpquota where quota should be turned on. See documentation
269usrquota 263usrquota in the quota-tools package for more details
264 (http://sourceforge.net/projects/linuxquota).
265
266jqfmt=<quota type> These options tell filesystem details about quota
267usrjquota=<file> so that quota information can be properly updated
268grpjquota=<file> during journal replay. They replace the above
269 quota options. See documentation in the quota-tools
270 package for more details
271 (http://sourceforge.net/projects/linuxquota).
270 272
271bh (*) ext4 associates buffer heads to data pages to 273bh (*) ext4 associates buffer heads to data pages to
272nobh (a) cache disk block mapping information 274nobh (a) cache disk block mapping information