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Btrfs: check return value of btrfs_alloc_path()

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Adding the check on the return value of btrfs_alloc_path() to several places.
And, some of callers are modified by this change.

Signed-off-by: Tsutomu Itoh <t-itoh@jp.fujitsu.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Tsutomu Itoh
2011-03-01 06:48:31 +00:00
committed by root
parent c59021f846
commit c2db1073fd
4 changed files with 27 additions and 14 deletions
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18
fs/btrfs/inode.c
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@ -1467,8 +1467,11 @@ static int btrfs_submit_bio_hook(struct inode *inode, int rw, struct bio *bio,
if (bio_flags & EXTENT_BIO_COMPRESSED) {
return btrfs_submit_compressed_read(inode, bio,
mirror_num, bio_flags);
} else if (!skip_sum)
btrfs_lookup_bio_sums(root, inode, bio, NULL);
} else if (!skip_sum) {
ret = btrfs_lookup_bio_sums(root, inode, bio, NULL);
if (ret)
return ret;
}
goto mapit;
} else if (!skip_sum) {
/* csum items have already been cloned */
@ -1903,10 +1906,10 @@ static int btrfs_io_failed_hook(struct bio *failed_bio,
else
rw = READ;
BTRFS_I(inode)->io_tree.ops->submit_bio_hook(inode, rw, bio,
ret = BTRFS_I(inode)->io_tree.ops->submit_bio_hook(inode, rw, bio,
failrec->last_mirror,
failrec->bio_flags, 0);
return 0;
return ret;
}
/*
@ -5943,9 +5946,12 @@ static inline int __btrfs_submit_dio_bio(struct bio *bio, struct inode *inode,
__btrfs_submit_bio_start_direct_io,
__btrfs_submit_bio_done);
goto err;
} else if (!skip_sum)
btrfs_lookup_bio_sums_dio(root, inode, bio,
} else if (!skip_sum) {
ret = btrfs_lookup_bio_sums_dio(root, inode, bio,
file_offset, csums);
if (ret)
goto err;
}
ret = btrfs_map_bio(root, rw, bio, 0, 1);
err: