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| author | Yan, Zheng <zheng.z.yan@intel.com> | 2013-02-18 16:38:14 +0800 |
|---|---|---|
| committer | Sage Weil <sage@inktank.com> | 2013-05-01 21:14:33 -0700 |
| commit | a8673d61ad77ddf2118599507bd40cc345e95368 (patch) | |
| tree | 0b8688fee3c2f6c7c35db75d42edd806df689d1d /fs/ceph/super.h | |
| parent | 964266cce94cee7e4aca42994fcda206c111e917 (diff) | |
| download | linux-a8673d61ad77ddf2118599507bd40cc345e95368.tar.bz2 | |
ceph: use I_COMPLETE inode flag instead of D_COMPLETE flag
commit c6ffe10015 moved the flag that tracks if the dcache contents
for a directory are complete to dentry. The problem is there are
lots of places that use ceph_dir_{set,clear,test}_complete() while
holding i_ceph_lock. but ceph_dir_{set,clear,test}_complete() may
sleep because they call dput().
This patch basically reverts that commit. For ceph_d_prune(), it's
called with both the dentry to prune and the parent dentry are
locked. So it's safe to access the parent dentry's d_inode and
clear I_COMPLETE flag.
Signed-off-by: Yan, Zheng <zheng.z.yan@intel.com>
Reviewed-by: Greg Farnum <greg@inktank.com>
Reviewed-by: Sage Weil <sage@inktank.com>
Diffstat (limited to 'fs/ceph/super.h')
| -rw-r--r-- | fs/ceph/super.h | 23 |
1 files changed, 2 insertions, 21 deletions
diff --git a/fs/ceph/super.h b/fs/ceph/super.h index 86810b6d973b..20dd1ee3c4f0 100644 --- a/fs/ceph/super.h +++ b/fs/ceph/super.h @@ -204,7 +204,6 @@ struct ceph_inode_xattr { * Ceph dentry state */ struct ceph_dentry_info { - unsigned long flags; struct ceph_mds_session *lease_session; u32 lease_gen, lease_shared_gen; u32 lease_seq; @@ -215,18 +214,6 @@ struct ceph_dentry_info { u64 offset; }; -/* - * dentry flags - * - * The locking for D_COMPLETE is a bit odd: - * - we can clear it at almost any time (see ceph_d_prune) - * - it is only meaningful if: - * - we hold dir inode i_ceph_lock - * - we hold dir FILE_SHARED caps - * - the dentry D_COMPLETE is set - */ -#define CEPH_D_COMPLETE 1 /* if set, d_u.d_subdirs is complete directory */ - struct ceph_inode_xattrs_info { /* * (still encoded) xattr blob. we avoid the overhead of parsing @@ -267,7 +254,7 @@ struct ceph_inode_info { struct timespec i_rctime; u64 i_rbytes, i_rfiles, i_rsubdirs; u64 i_files, i_subdirs; - u64 i_max_offset; /* largest readdir offset, set with D_COMPLETE */ + u64 i_max_offset; /* largest readdir offset, set with I_COMPLETE */ struct rb_root i_fragtree; struct mutex i_fragtree_mutex; @@ -432,6 +419,7 @@ static inline struct inode *ceph_find_inode(struct super_block *sb, /* * Ceph inode. */ +#define CEPH_I_COMPLETE 1 /* we have complete directory cached */ #define CEPH_I_NODELAY 4 /* do not delay cap release */ #define CEPH_I_FLUSH 8 /* do not delay flush of dirty metadata */ #define CEPH_I_NOFLUSH 16 /* do not flush dirty caps */ @@ -489,13 +477,6 @@ static inline loff_t ceph_make_fpos(unsigned frag, unsigned off) } /* - * set/clear directory D_COMPLETE flag - */ -void ceph_dir_set_complete(struct inode *inode); -void ceph_dir_clear_complete(struct inode *inode); -bool ceph_dir_test_complete(struct inode *inode); - -/* * caps helpers */ static inline bool __ceph_is_any_real_caps(struct ceph_inode_info *ci) |