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-rw-r--r--Documentation/filesystems/ext4.txt10
1 files changed, 7 insertions, 3 deletions
diff --git a/Documentation/filesystems/ext4.txt b/Documentation/filesystems/ext4.txt
index 97882df04865..7be02ac5fa36 100644
--- a/Documentation/filesystems/ext4.txt
+++ b/Documentation/filesystems/ext4.txt
@@ -235,6 +235,10 @@ minixdf Make 'df' act like Minix.
235 235
236debug Extra debugging information is sent to syslog. 236debug Extra debugging information is sent to syslog.
237 237
238abort Simulate the effects of calling ext4_abort() for
239 debugging purposes. This is normally used while
240 remounting a filesystem which is already mounted.
241
238errors=remount-ro Remount the filesystem read-only on an error. 242errors=remount-ro Remount the filesystem read-only on an error.
239errors=continue Keep going on a filesystem error. 243errors=continue Keep going on a filesystem error.
240errors=panic Panic and halt the machine if an error occurs. 244errors=panic Panic and halt the machine if an error occurs.
@@ -294,7 +298,7 @@ max_batch_time=usec Maximum amount of time ext4 should wait for
294 amount of time (on average) that it takes to 298 amount of time (on average) that it takes to
295 finish committing a transaction. Call this time 299 finish committing a transaction. Call this time
296 the "commit time". If the time that the 300 the "commit time". If the time that the
297 transactoin has been running is less than the 301 transaction has been running is less than the
298 commit time, ext4 will try sleeping for the 302 commit time, ext4 will try sleeping for the
299 commit time to see if other operations will join 303 commit time to see if other operations will join
300 the transaction. The commit time is capped by 304 the transaction. The commit time is capped by
@@ -328,7 +332,7 @@ noauto_da_alloc replacing existing files via patterns such as
328 journal commit, in the default data=ordered 332 journal commit, in the default data=ordered
329 mode, the data blocks of the new file are forced 333 mode, the data blocks of the new file are forced
330 to disk before the rename() operation is 334 to disk before the rename() operation is
331 commited. This provides roughly the same level 335 committed. This provides roughly the same level
332 of guarantees as ext3, and avoids the 336 of guarantees as ext3, and avoids the
333 "zero-length" problem that can happen when a 337 "zero-length" problem that can happen when a
334 system crashes before the delayed allocation 338 system crashes before the delayed allocation
@@ -358,7 +362,7 @@ written to the journal first, and then to its final location.
358In the event of a crash, the journal can be replayed, bringing both data and 362In the event of a crash, the journal can be replayed, bringing both data and
359metadata into a consistent state. This mode is the slowest except when data 363metadata into a consistent state. This mode is the slowest except when data
360needs to be read from and written to disk at the same time where it 364needs to be read from and written to disk at the same time where it
361outperforms all others modes. Curently ext4 does not have delayed 365outperforms all others modes. Currently ext4 does not have delayed
362allocation support if this data journalling mode is selected. 366allocation support if this data journalling mode is selected.
363 367
364References 368References