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| author |   Prasad Joshi <prasadjoshi124@gmail.com> | 2010-12-21 17:24:20 -0800 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2010-12-22 19:43:33 -0800 |
| commit | f06328d7721ad3852c45eb2a10a0c8f9439b5f33 (patch) | |
| tree | 739a5e8e3c0a38dccc18e9155add4ec9a528c8d1 /mm/page-writeback.c | |
| parent | logfs: fix deadlock in logfs_get_wblocks, hold and wait on super->s_write_mutex (diff) | |
| download | linux-dev-f06328d7721ad3852c45eb2a10a0c8f9439b5f33.tar.xz linux-dev-f06328d7721ad3852c45eb2a10a0c8f9439b5f33.zip | |
logfs: fix "Kernel BUG at readwrite.c:1193"
This happens when __logfs_create() tries to write a new inode to the disk
which is full.
__logfs_create() associates the transaction pointer with inode. During
the logfs_write_inode() function call chain this transaction pointer is
moved from inode to page->private using function move_inode_to_page
(do_write_inode() -> inode_to_page() -> move_inode_to_page)
When the write inode fails, the transaction is aborted and iput is called
on the failed inode. During delete_inode the same transaction pointer
associated with the page is getting used. Thus causing kernel BUG.
The patch checks for error in write_inode() and restores the page->private
to NULL.
Addresses https://bugzilla.kernel.org/show_bug.cgi?id=20162
Signed-off-by: Prasad Joshi <prasadjoshi124@gmail.com>
Cc: Joern Engel <joern@logfs.org>
Cc: Florian Mickler <florian@mickler.org>
Cc: "Rafael J. Wysocki" <rjw@sisk.pl>
Cc: Maciej Rutecki <maciej.rutecki@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/page-writeback.c')
0 files changed, 0 insertions, 0 deletions