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| author | Ben Gardiner <bengardiner@nanometrics.ca> | 2011-05-30 14:56:14 -0400 |
|---|---|---|
| committer | Artem Bityutskiy <Artem.Bityutskiy@nokia.com> | 2011-06-03 18:12:31 +0300 |
| commit | 4f1ab9b01d34eac9fc958f7150d3bf266dcc1685 (patch) | |
| tree | 77ff5efa6449743984e77f491902fa53f7716969 /fs/ubifs | |
| parent | 837072377034d0a0b18b851d1ab95676b245cc0a (diff) | |
| download | linux-4f1ab9b01d34eac9fc958f7150d3bf266dcc1685.tar.gz linux-4f1ab9b01d34eac9fc958f7150d3bf266dcc1685.tar.bz2 linux-4f1ab9b01d34eac9fc958f7150d3bf266dcc1685.zip | |
UBIFS: assert no fixup when writing a node
The current free space fixup can result in some writing to the UBI volume
when the space_fixup flag is set.
To catch instances where UBIFS is writing to the NAND while the space_fixup
flag is set, add an assert to ubifs_write_node().
Artem: tweaked the patch, added similar assertion to the write buffer
write path.
Signed-off-by: Ben Gardiner <bengardiner@nanometrics.ca>
Reviewed-by: Matthew L. Creech <mlcreech@gmail.com>
Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com>
Diffstat (limited to 'fs/ubifs')
| -rw-r--r-- | fs/ubifs/io.c | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/fs/ubifs/io.c b/fs/ubifs/io.c index 166951e0dcd3..3be645e012c9 100644 --- a/fs/ubifs/io.c +++ b/fs/ubifs/io.c @@ -581,6 +581,7 @@ int ubifs_wbuf_write_nolock(struct ubifs_wbuf *wbuf, void *buf, int len) ubifs_assert(wbuf->size % c->min_io_size == 0); ubifs_assert(mutex_is_locked(&wbuf->io_mutex)); ubifs_assert(!c->ro_media && !c->ro_mount); + ubifs_assert(!c->space_fixup); if (c->leb_size - wbuf->offs >= c->max_write_size) ubifs_assert(!((wbuf->offs + wbuf->size) % c->max_write_size)); @@ -759,6 +760,7 @@ int ubifs_write_node(struct ubifs_info *c, void *buf, int len, int lnum, ubifs_assert(lnum >= 0 && lnum < c->leb_cnt && offs >= 0); ubifs_assert(offs % c->min_io_size == 0 && offs < c->leb_size); ubifs_assert(!c->ro_media && !c->ro_mount); + ubifs_assert(!c->space_fixup); if (c->ro_error) return -EROFS; |