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| author | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-12-26 16:55:22 +0900 |
|---|---|---|
| committer | Jaegeuk Kim <jaegeuk.kim@samsung.com> | 2013-12-26 20:33:06 +0900 |
| commit | 1ec79083b2d4614d9dbaea67b5f55b60d7137a2d (patch) | |
| tree | 2b3ddcae1dade70d1e18c806c603269c09019852 /fs/f2fs | |
| parent | 58bfaf44df58082c72882b235cae611c975537d4 (diff) | |
| download | linux-1ec79083b2d4614d9dbaea67b5f55b60d7137a2d.tar.gz linux-1ec79083b2d4614d9dbaea67b5f55b60d7137a2d.tar.bz2 linux-1ec79083b2d4614d9dbaea67b5f55b60d7137a2d.zip | |
f2fs: should put the dnode when NEW_ADDR is detected
When get_dnode_of_data() in get_data_block() returns a successful dnode, we
should put the dnode.
But, previously, if its data block address is equal to NEW_ADDR, we didn't do
that, resulting in a deadlock condition.
So, this patch splits original error conditions with this case, and then calls
f2fs_put_dnode before finishing the function.
Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
| -rw-r--r-- | fs/f2fs/data.c | 9 |
1 files changed, 7 insertions, 2 deletions
diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 0879d2aa97e6..991e36835df8 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -626,11 +626,13 @@ static int get_data_block(struct inode *inode, sector_t iblock, /* When reading holes, we need its node page */ set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, pgofs, mode); - if (err || dn.data_blkaddr == NEW_ADDR) { + if (err) { if (err == -ENOENT) err = 0; goto unlock_out; } + if (dn.data_blkaddr == NEW_ADDR) + goto put_out; if (dn.data_blkaddr != NULL_ADDR) { map_bh(bh_result, inode->i_sb, dn.data_blkaddr); @@ -659,11 +661,14 @@ get_next: set_new_dnode(&dn, inode, NULL, NULL, 0); err = get_dnode_of_data(&dn, pgofs, mode); - if (err || dn.data_blkaddr == NEW_ADDR) { + if (err) { if (err == -ENOENT) err = 0; goto unlock_out; } + if (dn.data_blkaddr == NEW_ADDR) + goto put_out; + end_offset = IS_INODE(dn.node_page) ? ADDRS_PER_INODE(F2FS_I(inode)) : ADDRS_PER_BLOCK; } |