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authorJaegeuk Kim <jaegeuk.kim@samsung.com>2012-12-19 16:25:21 +0900
committerJaegeuk Kim <jaegeuk.kim@samsung.com>2012-12-26 10:39:52 +0900
commit1efef832020ef392deb2cd3d74e0c316711245be (patch)
treef9b777202cb0cca945c42aa4aec0ffe0743776ab /fs/f2fs
parent30f0c75858c46a0273ccb838de401b1f5fdebe6f (diff)
downloadop-kernel-dev-1efef832020ef392deb2cd3d74e0c316711245be.zip
op-kernel-dev-1efef832020ef392deb2cd3d74e0c316711245be.tar.gz
f2fs: do f2fs_balance_fs in front of dir operations
In order to conserve free sections to deal with the worst-case scenarios, f2fs should be able to freeze all the directory operations especially when there are not enough free sections. The f2fs_balance_fs() is for this use. When FS utilization becomes almost 100%, directory operations can be failed due to -ENOSPC frequently, which produces some dirty node pages occasionally. Previously, in such a case, f2fs_balance_fs() is not able to be triggered since it is triggered only if the directory operation ends up with success. So, this patch triggers f2fs_balance_fs() at first before handling directory operations. Signed-off-by: Jaegeuk Kim <jaegeuk.kim@samsung.com>
Diffstat (limited to 'fs/f2fs')
-rw-r--r--fs/f2fs/namei.c28
1 files changed, 14 insertions, 14 deletions
diff --git a/fs/f2fs/namei.c b/fs/f2fs/namei.c
index 89b7675..b42389f 100644
--- a/fs/f2fs/namei.c
+++ b/fs/f2fs/namei.c
@@ -123,6 +123,8 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
nid_t ino = 0;
int err;
+ f2fs_balance_fs(sbi);
+
inode = f2fs_new_inode(dir, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
@@ -144,8 +146,6 @@ static int f2fs_create(struct inode *dir, struct dentry *dentry, umode_t mode,
if (!sbi->por_doing)
d_instantiate(dentry, inode);
unlock_new_inode(inode);
-
- f2fs_balance_fs(sbi);
return 0;
out:
clear_nlink(inode);
@@ -163,6 +163,8 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
struct f2fs_sb_info *sbi = F2FS_SB(sb);
int err;
+ f2fs_balance_fs(sbi);
+
inode->i_ctime = CURRENT_TIME;
atomic_inc(&inode->i_count);
@@ -172,8 +174,6 @@ static int f2fs_link(struct dentry *old_dentry, struct inode *dir,
goto out;
d_instantiate(dentry, inode);
-
- f2fs_balance_fs(sbi);
return 0;
out:
clear_inode_flag(F2FS_I(inode), FI_INC_LINK);
@@ -223,6 +223,8 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
struct page *page;
int err = -ENOENT;
+ f2fs_balance_fs(sbi);
+
de = f2fs_find_entry(dir, &dentry->d_name, &page);
if (!de)
goto fail;
@@ -238,7 +240,6 @@ static int f2fs_unlink(struct inode *dir, struct dentry *dentry)
/* In order to evict this inode, we set it dirty */
mark_inode_dirty(inode);
- f2fs_balance_fs(sbi);
fail:
return err;
}
@@ -252,6 +253,8 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
unsigned symlen = strlen(symname) + 1;
int err;
+ f2fs_balance_fs(sbi);
+
inode = f2fs_new_inode(dir, S_IFLNK | S_IRWXUGO);
if (IS_ERR(inode))
return PTR_ERR(inode);
@@ -268,9 +271,6 @@ static int f2fs_symlink(struct inode *dir, struct dentry *dentry,
d_instantiate(dentry, inode);
unlock_new_inode(inode);
-
- f2fs_balance_fs(sbi);
-
return err;
out:
clear_nlink(inode);
@@ -286,6 +286,8 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
struct inode *inode;
int err;
+ f2fs_balance_fs(sbi);
+
inode = f2fs_new_inode(dir, S_IFDIR | mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
@@ -305,7 +307,6 @@ static int f2fs_mkdir(struct inode *dir, struct dentry *dentry, umode_t mode)
d_instantiate(dentry, inode);
unlock_new_inode(inode);
- f2fs_balance_fs(sbi);
return 0;
out_fail:
@@ -336,6 +337,8 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
if (!new_valid_dev(rdev))
return -EINVAL;
+ f2fs_balance_fs(sbi);
+
inode = f2fs_new_inode(dir, mode);
if (IS_ERR(inode))
return PTR_ERR(inode);
@@ -350,9 +353,6 @@ static int f2fs_mknod(struct inode *dir, struct dentry *dentry,
alloc_nid_done(sbi, inode->i_ino);
d_instantiate(dentry, inode);
unlock_new_inode(inode);
-
- f2fs_balance_fs(sbi);
-
return 0;
out:
clear_nlink(inode);
@@ -376,6 +376,8 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
struct f2fs_dir_entry *new_entry;
int err = -ENOENT;
+ f2fs_balance_fs(sbi);
+
old_entry = f2fs_find_entry(old_dir, &old_dentry->d_name, &old_page);
if (!old_entry)
goto out;
@@ -441,8 +443,6 @@ static int f2fs_rename(struct inode *old_dir, struct dentry *old_dentry,
}
mutex_unlock_op(sbi, RENAME);
-
- f2fs_balance_fs(sbi);
return 0;
out_dir:
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