2.6.25-stable review patch. If anyone has any objections, please let us know. ------------------ From: Jan Kara commit d5dee5c395062a55236318ac4eec1f4ebb9de6db upstream Quota files cannot have tails because quota_write and quota_read functions do not support them. So far when quota files did have tail, we just refused to turn quotas on it. Sadly this check has been wrong and so there are now plenty installations where quota files don't have NOTAIL flag set and so now after fixing the check, they suddently fail to turn quotas on. Since it's easy to unpack the tail from kernel, do this from reiserfs_quota_on() which solves the problem and is generally nicer to users anyway. Signed-off-by: Jan Kara Reported-by: Cc: Jeff Mahoney Cc: Chris Mason Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- fs/reiserfs/ioctl.c | 4 +--- fs/reiserfs/super.c | 17 ++++++++++++----- include/linux/reiserfs_fs.h | 1 + 3 files changed, 14 insertions(+), 8 deletions(-) --- a/fs/reiserfs/ioctl.c +++ b/fs/reiserfs/ioctl.c @@ -11,8 +11,6 @@ #include #include -static int reiserfs_unpack(struct inode *inode, struct file *filp); - /* ** reiserfs_ioctl - handler for ioctl for inode ** supported commands: @@ -140,7 +138,7 @@ int reiserfs_prepare_write(struct file * ** Function try to convert tail from direct item into indirect. ** It set up nopack attribute in the REISERFS_I(inode)->nopack */ -static int reiserfs_unpack(struct inode *inode, struct file *filp) +int reiserfs_unpack(struct inode *inode, struct file *filp) { int retval = 0; int index; --- a/fs/reiserfs/super.c +++ b/fs/reiserfs/super.c @@ -2019,6 +2019,7 @@ static int reiserfs_quota_on(struct supe { int err; struct nameidata nd; + struct inode *inode; if (!(REISERFS_SB(sb)->s_mount_opt & (1 << REISERFS_QUOTA))) return -EINVAL; @@ -2030,12 +2031,18 @@ static int reiserfs_quota_on(struct supe path_put(&nd.path); return -EXDEV; } + inode = nd.path.dentry->d_inode; /* We must not pack tails for quota files on reiserfs for quota IO to work */ - if (!(REISERFS_I(nd.path.dentry->d_inode)->i_flags & i_nopack_mask)) { - reiserfs_warning(sb, - "reiserfs: Quota file must have tail packing disabled."); - path_put(&nd.path); - return -EINVAL; + if (!(REISERFS_I(inode)->i_flags & i_nopack_mask)) { + err = reiserfs_unpack(inode, NULL); + if (err) { + reiserfs_warning(sb, + "reiserfs: Unpacking tail of quota file failed" + " (%d). Cannot turn on quotas.", err); + path_put(&nd.path); + return -EINVAL; + } + mark_inode_dirty(inode); } /* Not journalling quota? No more tests needed... */ if (!REISERFS_SB(sb)->s_qf_names[USRQUOTA] && --- a/include/linux/reiserfs_fs.h +++ b/include/linux/reiserfs_fs.h @@ -2176,6 +2176,7 @@ int reiserfs_ioctl(struct inode *inode, unsigned int cmd, unsigned long arg); long reiserfs_compat_ioctl(struct file *filp, unsigned int cmd, unsigned long arg); +int reiserfs_unpack(struct inode *inode, struct file *filp); /* ioctl's command */ #define REISERFS_IOC_UNPACK _IOW(0xCD,1,long) -- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/