linux-toradex.git/fs/nilfs2/segment.c, branch v2.6.33.8

nilfs2: fix hang-up of cleaner after log writer returned with error

2010-04-01T23:01:50+00:00

commit 110d735a0ae69bdd11af9acb6ea3b979137eb118 upstream.

According to the report from Andreas Beckmann (Message-ID:
<4BA54677.3090902@abeckmann.de>), nilfs in 2.6.33 kernel got stuck
after a disk full error.

This turned out to be a regression by log writer updates merged at
kernel 2.6.33.  nilfs_segctor_abort_construction, which is a cleanup
function for erroneous cases, was skipping writeback completion for
some logs.

This fixes the bug and would resolve the hang issue.

Reported-by: Andreas Beckmann 
Signed-off-by: Ryusuke Konishi 
Tested-by: Ryusuke Konishi 
Signed-off-by: Greg Kroah-Hartman

nilfs2: fix potential leak of dirty data on umount

2010-01-31T05:57:31+00:00

This fixes incorrect usage of nilfs_segctor_confirm() test function in
nilfs_segctor_destroy(); nilfs_segctor_confirm() returns zero if the
filesystem is not clean, so its use in nilfs_segctor_destroy() needs
inversion.

Signed-off-by: Ryusuke Konishi

nilfs2: separate wait function from nilfs_segctor_write

2009-11-30T12:17:52+00:00

This separates wait function for submitted logs from the write
function nilfs_segctor_write().  A new list of segment buffers
"sc_write_logs" is added to hold logs under writing, and double
buffering is partially applied to hide io latency.

At this point, the double buffering is disabled for blocksize <
pagesize because page dirty flag is turned off during write and dirty
buffers are not properly collected for pages crossing over segments.

To receive full benefit of the double buffering, further refinement is
needed to move the io wait outside the lock section of log writer.

Signed-off-by: Ryusuke Konishi

nilfs2: add iterator for segment buffers

2009-11-30T12:06:35+00:00

This adds a few iterator functions for segment buffers to make it easy
to handle multiple series of logs.

Signed-off-by: Ryusuke Konishi

nilfs2: hide nilfs_write_info struct in segment buffer code

2009-11-30T12:06:35+00:00

Hides nilfs_write_info struct and nilfs_segbuf_prepare_write function
in segbuf.c to simplify the interface of nilfs_segbuf_write function.

Signed-off-by: Ryusuke Konishi

nilfs2: relocate io status variables to segment buffer

2009-11-30T12:05:57+00:00

This moves io status variables in nilfs_write_info struct to
nilfs_segment_buffer struct.

This is a preparation to hide nilfs_write_info in segment buffer code.

Signed-off-by: Ryusuke Konishi

nilfs2: use list_splice_tail or list_splice_tail_init

2009-11-28T17:50:46+00:00

This applies list_splice_tail (or list_splice_tail_init) operation
instead of list_splice (or list_splice_init, respectively) to append a
new list to tail of an existing list.

Signed-off-by: Ryusuke Konishi

nilfs2: move routine to set segment usage into sufile

2009-11-20T01:05:51+00:00

This adds nilfs_sufile_set_segment_usage() function in sufile to
replace direct access to the sufile metadata in log writer code.

Signed-off-by: Ryusuke Konishi

nilfs2: move routine marking segment usage dirty into sufile

2009-11-20T01:05:51+00:00

This adds nilfs_sufile_mark_dirty() function in sufile to replace
nilfs_touch_segusage() function in log writer code.  This is a
preparation for the further cleanup which will move out low level
sufile operations in the log writer.

Signed-off-by: Ryusuke Konishi

nilfs2: eliminate inlines to directly read/write inode of metadata files

2009-11-20T01:05:48+00:00

Removes two inline functions: nilfs_mdt_read_inode_direct() and
nilfs_mdt_write_inode_direct().

Signed-off-by: Ryusuke Konishi