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authorJaegeuk Kim <jaegeuk.kim@samsung.com>2013-01-11 13:10:49 +0900
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2013-01-11 15:09:17 +0900
commit7d82db83165dbac8c3f6d47b73c84f38e3996e30 (patch)
treeca56c0038cff6030eed8704105af84421692cf3b /fs/f2fs
parent408e9375610cca6d54e9c654cbe05a647687e12e (diff)
f2fs: add f2fs_balance_fs in several interfaces
The f2fs_balance_fs() is to check the number of free sections and decide whether it needs to conduct cleaning or not. If there are not enough free sections, the cleaning job should be started. In order to control an amount of free sections even under high utilization, f2fs should call f2fs_balance_fs at all the VFS interfaces that are able to produce dirty pages. This patch adds the function calls in the missing interfaces as follows. 1. f2fs_setxattr() The f2fs_setxattr() produces dirty node pages so that we should call f2fs_balance_fs() either likewise doing in other VFS interfaces such as f2fs_lookup(), f2fs_mkdir(), and so on. 2. f2fs_sync_file() We should guarantee serving free sections for syncing metadata during fsync. Previously, there is no space check before triggering checkpoint and sync_node_pages. Therefore, if a bunch of fsync calls are triggered under 100% of FS utilization, f2fs is able to be faced with no free sections, resulting in BUG_ON(). 3. f2fs_sync_fs() Before calling write_checkpoint(), we should guarantee that there are minimum free sections. 4. f2fs_write_inode() f2fs_write_inode() is also able to produce dirty node pages. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/file.c3
-rw-r--r--fs/f2fs/inode.c3
-rw-r--r--fs/f2fs/super.c2
-rw-r--r--fs/f2fs/xattr.c2
4 files changed, 10 insertions, 0 deletions
diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 88593c5e743..7354c2df108 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -137,6 +137,9 @@ int f2fs_sync_file(struct file *file, loff_t start, loff_t end, int datasync)
if (ret)
return ret;
+ /* guarantee free sections for fsync */
+ f2fs_balance_fs(sbi);
+
mutex_lock(&inode->i_mutex);
if (datasync && !(inode->i_state & I_DIRTY_DATASYNC))
diff --git a/fs/f2fs/inode.c b/fs/f2fs/inode.c
index bf20b4d0321..79424177732 100644
--- a/fs/f2fs/inode.c
+++ b/fs/f2fs/inode.c
@@ -217,6 +217,9 @@ int f2fs_write_inode(struct inode *inode, struct writeback_control *wbc)
inode->i_ino == F2FS_META_INO(sbi))
return 0;
+ if (wbc)
+ f2fs_balance_fs(sbi);
+
node_page = get_node_page(sbi, inode->i_ino);
if (IS_ERR(node_page))
return PTR_ERR(node_page);
diff --git a/fs/f2fs/super.c b/fs/f2fs/super.c
index afa7ef0c4ba..0f2b2eb86a0 100644
--- a/fs/f2fs/super.c
+++ b/fs/f2fs/super.c
@@ -137,6 +137,8 @@ int f2fs_sync_fs(struct super_block *sb, int sync)
if (sync)
write_checkpoint(sbi, false, false);
+ else
+ f2fs_balance_fs(sbi);
return 0;
}
diff --git a/fs/f2fs/xattr.c b/fs/f2fs/xattr.c
index 940136a3d3a..8038c049650 100644
--- a/fs/f2fs/xattr.c
+++ b/fs/f2fs/xattr.c
@@ -318,6 +318,8 @@ int f2fs_setxattr(struct inode *inode, int name_index, const char *name,
if (name_len > 255 || value_len > MAX_VALUE_LEN)
return -ERANGE;
+ f2fs_balance_fs(sbi);
+
mutex_lock_op(sbi, NODE_NEW);
if (!fi->i_xattr_nid) {
/* Allocate new attribute block */