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udf: Skip mirror metadata FE loading when metadata FE is ok

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It is not necessary to load mirror metadata FE when metadata FE is OK.  So try
to read it only the first time udf_get_pblock_meta25() fails to map the block
from metadata FE.

Signed-off-by: Ashish Sangwan <ashishsangwan2@gmail.com>
Signed-off-by: Namjae Jeon <linkinjeon@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
This commit is contained in:
Namjae Jeon
2011-10-23 19:28:32 +09:00
committed by Jan Kara
parent 6360e21f94
commit 3080a74ea3
4 changed files with 43 additions and 36 deletions
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8
fs/udf/partition.c
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@@ -321,8 +321,14 @@ uint32_t udf_get_pblock_meta25(struct super_block *sb, uint32_t block,
/* We shouldn't mount such media... */
BUG_ON(!inode);
retblk = udf_try_read_meta(inode, block, partition, offset);
if (retblk == 0xFFFFFFFF) {
if (retblk == 0xFFFFFFFF && mdata->s_metadata_fe) {
udf_warn(sb, "error reading from METADATA, trying to read from MIRROR\n");
if (!mdata->s_mirror_loaded_flag) {
mdata->s_mirror_fe = udf_find_metadata_inode_efe(sb,
mdata->s_mirror_file_loc, map->s_partition_num);
mdata->s_mirror_loaded_flag = 1;
}
inode = mdata->s_mirror_fe;
if (!inode)
return 0xFFFFFFFF;