diff options
Diffstat (limited to 'Documentation/filesystems/ext4.txt')
-rw-r--r-- | Documentation/filesystems/ext4.txt | 24 |
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 | ||
137 | journal_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 | |||
142 | journal_async_commit Commit block can be written to disk without waiting | 137 | journal_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 | ||
147 | journal=update Update the ext4 file system's journal to the current | 141 | journal=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 | ||
264 | sb=n Use alternate superblock at this location. | 258 | sb=n Use alternate superblock at this location. |
265 | 259 | ||
266 | quota | 260 | quota These options are ignored by the filesystem. They |
267 | noquota | 261 | noquota are used only by quota tools to recognize volumes |
268 | grpquota | 262 | grpquota where quota should be turned on. See documentation |
269 | usrquota | 263 | usrquota in the quota-tools package for more details |
264 | (http://sourceforge.net/projects/linuxquota). | ||
265 | |||
266 | jqfmt=<quota type> These options tell filesystem details about quota | ||
267 | usrjquota=<file> so that quota information can be properly updated | ||
268 | grpjquota=<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 | ||
271 | bh (*) ext4 associates buffer heads to data pages to | 273 | bh (*) ext4 associates buffer heads to data pages to |
272 | nobh (a) cache disk block mapping information | 274 | nobh (a) cache disk block mapping information |