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| author | Josef Bacik <josef@redhat.com> | 2011-07-16 20:44:56 -0400 |
|---|---|---|
| committer | Al Viro <viro@zeniv.linux.org.uk> | 2011-07-20 20:47:59 -0400 |
| commit | 02c24a82187d5a628c68edfe71ae60dc135cd178 (patch) | |
| tree | c8dbaba4d82e2b20ed4335910a564a1f7d90fcf6 /fs/jffs2 | |
| parent | 22735068d53c7115e384bc88dea95b17e76a6839 (diff) | |
| download | linux-stable-02c24a82187d5a628c68edfe71ae60dc135cd178.tar.gz linux-stable-02c24a82187d5a628c68edfe71ae60dc135cd178.tar.bz2 linux-stable-02c24a82187d5a628c68edfe71ae60dc135cd178.zip | |
fs: push i_mutex and filemap_write_and_wait down into ->fsync() handlers
Btrfs needs to be able to control how filemap_write_and_wait_range() is called
in fsync to make it less of a painful operation, so push down taking i_mutex and
the calling of filemap_write_and_wait() down into the ->fsync() handlers. Some
file systems can drop taking the i_mutex altogether it seems, like ext3 and
ocfs2. For correctness sake I just pushed everything down in all cases to make
sure that we keep the current behavior the same for everybody, and then each
individual fs maintainer can make up their mind about what to do from there.
Thanks,
Acked-by: Jan Kara <jack@suse.cz>
Signed-off-by: Josef Bacik <josef@redhat.com>
Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Diffstat (limited to 'fs/jffs2')
| -rw-r--r-- | fs/jffs2/file.c | 9 | ||||
| -rw-r--r-- | fs/jffs2/os-linux.h | 2 |
2 files changed, 9 insertions, 2 deletions
diff --git a/fs/jffs2/file.c b/fs/jffs2/file.c index 1c0a08d711aa..3989f7e09f7f 100644 --- a/fs/jffs2/file.c +++ b/fs/jffs2/file.c @@ -27,13 +27,20 @@ static int jffs2_write_begin(struct file *filp, struct address_space *mapping, struct page **pagep, void **fsdata); static int jffs2_readpage (struct file *filp, struct page *pg); -int jffs2_fsync(struct file *filp, int datasync) +int jffs2_fsync(struct file *filp, loff_t start, loff_t end, int datasync) { struct inode *inode = filp->f_mapping->host; struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb); + int ret; + + ret = filemap_write_and_wait_range(inode->i_mapping, start, end); + if (ret) + return ret; + mutex_lock(&inode->i_mutex); /* Trigger GC to flush any pending writes for this inode */ jffs2_flush_wbuf_gc(c, inode->i_ino); + mutex_unlock(&inode->i_mutex); return 0; } diff --git a/fs/jffs2/os-linux.h b/fs/jffs2/os-linux.h index 65c6c43ca482..9c252835e8e5 100644 --- a/fs/jffs2/os-linux.h +++ b/fs/jffs2/os-linux.h @@ -158,7 +158,7 @@ extern const struct inode_operations jffs2_dir_inode_operations; extern const struct file_operations jffs2_file_operations; extern const struct inode_operations jffs2_file_inode_operations; extern const struct address_space_operations jffs2_file_address_operations; -int jffs2_fsync(struct file *, int); +int jffs2_fsync(struct file *, loff_t, loff_t, int); int jffs2_do_readpage_unlock (struct inode *inode, struct page *pg); /* ioctl.c */ |