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authorJason Hrycay <jason.hrycay@motorola.com>2013-04-08 20:16:44 -0500
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-04-09 17:22:45 +0900
commit1127a3d448bcf4de338e60a7cc695d54c5767433 (patch)
tree7b7dee3b1eedecd5d5d125f5a6e919fc2fb46d10 /fs/f2fs
parent49952fa182a2e9b3f40b974278c5b1144f0c918b (diff)
f2fs: move f2fs_balance_fs from truncate to punch_hole
Move the f2fs_balance_fs out of the truncate_hole function and only perform that in punch_hole use case. The commit: ed60b1644e7f7e5dd67d21caf7e4425dff05dad0 intended to do this but moved it into truncate_hole to cover more cases. However, a deadlock scenario is possible when deleting an inode entry under specific conditions: f2fs_delete_entry() mutex_lock_op(sbi, DENTRY_OPS); truncate_hole() f2fs_balance_fs() mutex_lock(&sbi->gc_mutex); f2fs_gc() write_checkpoint() block_operations() mutex_lock_op(sbi, DENTRY_OPS); Lets move it into the punch_hole case to cover the original intent of avoiding it during fallocate's expand_inode_data case. Change-Id: I29f8ea1056b0b88b70ba8652d901b6e8431bb27e Signed-off-by: Jason Hrycay <jason.hrycay@motorola.com> Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/file.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index e031f570df79..155b362dad63 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -390,8 +390,6 @@ int truncate_hole(struct inode *inode, pgoff_t pg_start, pgoff_t pg_end)
struct dnode_of_data dn;
struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
- f2fs_balance_fs(sbi);
-
mutex_lock_op(sbi, DATA_TRUNC);
set_new_dnode(&dn, inode, NULL, NULL, 0);
err = get_dnode_of_data(&dn, index, LOOKUP_NODE);
@@ -435,6 +433,9 @@ static int punch_hole(struct inode *inode, loff_t offset, loff_t len, int mode)
if (pg_start < pg_end) {
struct address_space *mapping = inode->i_mapping;
loff_t blk_start, blk_end;
+ struct f2fs_sb_info *sbi = F2FS_SB(inode->i_sb);
+
+ f2fs_balance_fs(sbi);
blk_start = pg_start << PAGE_CACHE_SHIFT;
blk_end = pg_end << PAGE_CACHE_SHIFT;