[PATCH] f2fs: fix writecount false positive in releasing compress blocks

[Daeho Jeong]

From: Daeho Jeong <daehoje...@google.com>

In current condition check, if it detects writecount, it return -EBUSY
regardless of f_mode of the file. Fixed it.

Signed-off-by: Daeho Jeong <daehoje...@google.com>
---
 fs/f2fs/file.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/fs/f2fs/file.c b/fs/f2fs/file.c
index 0a958eef3d1f..ef5a844de53f 100644
--- a/fs/f2fs/file.c
+++ b/fs/f2fs/file.c
@@ -3509,7 +3509,8 @@ static int f2fs_release_compress_blocks(struct file 
*filp, unsigned long arg)
        inode_lock(inode);
 
        writecount = atomic_read(&inode->i_writecount);
-       if ((filp->f_mode & FMODE_WRITE && writecount != 1) || writecount) {
+       if ((filp->f_mode & FMODE_WRITE && writecount != 1) ||
+                       (!(filp->f_mode & FMODE_WRITE) && writecount)) {
                ret = -EBUSY;
                goto out;
        }
-- 
2.28.0.1011.ga647a8990f-goog