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Subject[PATCH 1/1] fs/affs/dir.c: unlock/brelse dir on failure + code clean-up
0edf977d2ae32b ("[readdir] convert affs")
returns directly -EIO without unlocking dir inode and cleaning dir bh
when second affs_bread sequence fails.
This patch restores initial behaviour.It also fixes pr_debug and
affs_error to fit in 80 columns + removes reference to filldir
(replaced by dir_emit in the commit above).

Signed-off-by: Fabian Frederick <fabf@skynet.be>
---
fs/affs/dir.c | 28 ++++++++++++++++++----------
1 file changed, 18 insertions(+), 10 deletions(-)

diff --git a/fs/affs/dir.c b/fs/affs/dir.c
index f1eba8c..cbbda47 100644
--- a/fs/affs/dir.c
+++ b/fs/affs/dir.c
@@ -52,8 +52,10 @@ affs_readdir(struct file *file, struct dir_context *ctx)
int hash_pos;
int chain_pos;
u32 ino;
+ int error = 0;

- pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n",inode->i_ino,(unsigned long)ctx->pos);
+ pr_debug("AFFS: readdir(ino=%lu,f_pos=%lx)\n",
+ inode->i_ino, (unsigned long)ctx->pos);

if (ctx->pos < 2) {
file->private_data = (void *)0;
@@ -72,7 +74,7 @@ affs_readdir(struct file *file, struct dir_context *ctx)
}
dir_bh = affs_bread(sb, inode->i_ino);
if (!dir_bh)
- goto readdir_out;
+ goto out_unlock_dir;

/* If the directory hasn't changed since the last call to readdir(),
* we can jump directly to where we left off.
@@ -88,7 +90,8 @@ affs_readdir(struct file *file, struct dir_context *ctx)
fh_bh = affs_bread(sb, ino);
if (!fh_bh) {
affs_error(sb, "readdir","Cannot read block %d", i);
- return -EIO;
+ error = -EIO;
+ goto out_brelse_dir;
}
ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain);
affs_brelse(fh_bh);
@@ -107,29 +110,34 @@ inside:
do {
fh_bh = affs_bread(sb, ino);
if (!fh_bh) {
- affs_error(sb, "readdir","Cannot read block %d", ino);
+ affs_error(sb, "readdir",
+ "Cannot read block %d", ino);
break;
}

namelen = min(AFFS_TAIL(sb, fh_bh)->name[0], (u8)30);
name = AFFS_TAIL(sb, fh_bh)->name + 1;
- pr_debug("AFFS: readdir(): filldir(\"%.*s\", ino=%u), hash=%d, f_pos=%x\n",
+ pr_debug("AFFS: readdir(): dir_emit(\"%.*s\", "
+ "ino=%u), hash=%d, f_pos=%x\n",
namelen, name, ino, hash_pos, (u32)ctx->pos);
+
if (!dir_emit(ctx, name, namelen, ino, DT_UNKNOWN))
- goto readdir_done;
+ goto done;
ctx->pos++;
ino = be32_to_cpu(AFFS_TAIL(sb, fh_bh)->hash_chain);
affs_brelse(fh_bh);
fh_bh = NULL;
} while (ino);
}
-readdir_done:
+done:
file->f_version = inode->i_version;
file->private_data = (void *)(long)ino;
+ affs_brelse(fh_bh);

-readdir_out:
+out_brelse_dir:
affs_brelse(dir_bh);
- affs_brelse(fh_bh);
+
+out_unlock_dir:
affs_unlock_dir(inode);
- return 0;
+ return error;
}
--
1.8.1.4


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