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authorBen Gardiner <bengardiner@nanometrics.ca>2011-05-30 14:56:14 -0400
committerArtem Bityutskiy <Artem.Bityutskiy@nokia.com>2011-06-03 18:12:31 +0300
commit4f1ab9b01d34eac9fc958f7150d3bf266dcc1685 (patch)
tree77ff5efa6449743984e77f491902fa53f7716969
parent837072377034d0a0b18b851d1ab95676b245cc0a (diff)
downloadlinux-stericsson-4f1ab9b01d34eac9fc958f7150d3bf266dcc1685.tar.gz
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>
-rw-r--r--fs/ubifs/io.c2
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;