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author | Al Viro <viro@zeniv.linux.org.uk> | 2015-06-18 22:39:46 -0400 |
---|---|---|
committer | Al Viro <viro@zeniv.linux.org.uk> | 2015-07-06 17:39:52 -0400 |
commit | 5a39c25562aa5eab5a798919855cf41ddeed8b0d (patch) | |
tree | 93d8998d91be23821e4e1e0f90c633f967f75927 /fs/ufs/inode.c | |
parent | f53bd1421b3eb84375e9e6964665d23d4190400d (diff) | |
download | linux-5a39c25562aa5eab5a798919855cf41ddeed8b0d.tar.bz2 |
ufs_inode_get{frag,block}(): get rid of retries
We are holding ->truncate_mutex, so nobody else can alter our
block pointers. Rechecks/retries were needed back when we
only held BKL there, and had to cope with write_begin/writepage
and writepage/truncate races. Can't happen anymore...
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/ufs/inode.c')
-rw-r--r-- | fs/ufs/inode.c | 43 |
1 files changed, 8 insertions, 35 deletions
diff --git a/fs/ufs/inode.c b/fs/ufs/inode.c index 86cc1eea0fb2..95cb0a8f5ec9 100644 --- a/fs/ufs/inode.c +++ b/fs/ufs/inode.c @@ -248,20 +248,12 @@ ufs_inode_getfrag(struct inode *inode, u64 fragment, goal = 0; -repeat: tmp = ufs_data_ptr_to_cpu(sb, p); lastfrag = ufsi->i_lastfrag; if (tmp && fragment < lastfrag) { if (!phys) { - result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); - if (tmp == ufs_data_ptr_to_cpu(sb, p)) { - UFSD("EXIT, result %llu\n", - (unsigned long long)tmp + blockoff); - return result; - } - brelse (result); - goto repeat; + return sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); } else { *phys = uspi->s_sbbase + tmp + blockoff; return NULL; @@ -283,14 +275,9 @@ repeat: ufs_data_ptr_to_cpu(sb, p2), uspi->s_fpb - lastblockoff, err, locked_page); - if (!tmp) { - if (lastfrag != ufsi->i_lastfrag) - goto repeat; - else - return NULL; - } + if (!tmp) + return NULL; lastfrag = ufsi->i_lastfrag; - } tmp = ufs_data_ptr_to_cpu(sb, ufs_get_direct_data_ptr(uspi, ufsi, @@ -325,9 +312,6 @@ repeat: phys != NULL ? locked_page : NULL); } if (!tmp) { - if ((!blockoff && ufs_data_ptr_to_cpu(sb, p)) || - (blockoff && lastfrag != ufsi->i_lastfrag)) - goto repeat; *err = -ENOSPC; return NULL; } @@ -345,7 +329,6 @@ repeat: if (IS_SYNC(inode)) ufs_sync_inode (inode); mark_inode_dirty(inode); - UFSD("EXIT, result %llu\n", (unsigned long long)tmp + blockoff); return result; /* This part : To be implemented .... @@ -409,19 +392,14 @@ ufs_inode_getblock(struct inode *inode, struct buffer_head *bh, p = (__fs64 *)bh->b_data + block; else p = (__fs32 *)bh->b_data + block; -repeat: + tmp = ufs_data_ptr_to_cpu(sb, p); if (tmp) { - if (!phys) { + if (!phys) result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); - if (tmp == ufs_data_ptr_to_cpu(sb, p)) - goto out; - brelse (result); - goto repeat; - } else { + else *phys = uspi->s_sbbase + tmp + blockoff; - goto out; - } + goto out; } if (block && (uspi->fs_magic == UFS2_MAGIC ? @@ -432,12 +410,8 @@ repeat: goal = bh->b_blocknr + uspi->s_fpb; tmp = ufs_new_fragments(inode, p, ufs_blknum(new_fragment), goal, uspi->s_fpb, err, locked_page); - if (!tmp) { - if (ufs_data_ptr_to_cpu(sb, p)) - goto repeat; + if (!tmp) goto out; - } - if (!phys) { result = sb_getblk(sb, uspi->s_sbbase + tmp + blockoff); @@ -451,7 +425,6 @@ repeat: sync_dirty_buffer(bh); inode->i_ctime = CURRENT_TIME_SEC; mark_inode_dirty(inode); - UFSD("result %llu\n", (unsigned long long)tmp + blockoff); out: brelse (bh); UFSD("EXIT\n"); |