Commit 525d15e8 authored by Yan, Zheng's avatar Yan, Zheng Committed by Ilya Dryomov
Browse files

ceph: check inode type for CEPH_CAP_FILE_{CACHE,RD,REXTEND,LAZYIO} 



These bits will have new meaning for directory inodes.

Signed-off-by: default avatar"Yan, Zheng" <zyan@redhat.com>
Reviewed-by: default avatarJeff Layton <jlayton@kernel.org>
Signed-off-by: default avatarIlya Dryomov <idryomov@gmail.com>
parent f85122af

fs/ceph/caps.c

+32 −12
Original line number Diff line number Diff line
@@ -573,7 +573,8 @@ static void __check_cap_issue(struct ceph_inode_info *ci, struct ceph_cap *cap, 
	 * Each time we receive FILE_CACHE anew, we increment

	 * i_rdcache_gen.

	 */

	if ((issued & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) &&

	if (S_ISREG(ci->vfs_inode.i_mode) &&

	    (issued & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) &&

	    (had & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) == 0) {

		ci->i_rdcache_gen++;

	}
@@ -958,7 +959,7 @@ int __ceph_caps_used(struct ceph_inode_info *ci) 
	if (ci->i_rd_ref)

		used |= CEPH_CAP_FILE_RD;

	if (ci->i_rdcache_ref ||

	    (!S_ISDIR(ci->vfs_inode.i_mode) && /* ignore readdir cache */

	    (S_ISREG(ci->vfs_inode.i_mode) &&

	     ci->vfs_inode.i_data.nrpages))

		used |= CEPH_CAP_FILE_CACHE;

	if (ci->i_wr_ref)
@@ -985,6 +986,20 @@ int __ceph_caps_file_wanted(struct ceph_inode_info *ci) 
	return ceph_caps_for_mode(bits >> 1);

}



/*

 * wanted, by virtue of open file modes AND cap refs (buffered/cached data)

 */

int __ceph_caps_wanted(struct ceph_inode_info *ci)

{

	int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci);

	if (!S_ISDIR(ci->vfs_inode.i_mode)) {

		/* we want EXCL if dirty data */

		if (w & CEPH_CAP_FILE_BUFFER)

			w |= CEPH_CAP_FILE_EXCL;

	}

	return w;

}



/*

 * Return caps we have registered with the MDS(s) as 'wanted'.

 */
@@ -1903,7 +1918,7 @@ retry_locked: 
	 * If we fail, it's because pages are locked.... try again later.

	 */

	if ((!no_delay || mdsc->stopping) &&

	    !S_ISDIR(inode->i_mode) &&		/* ignore readdir cache */

	    S_ISREG(inode->i_mode) &&

	    !(ci->i_wb_ref || ci->i_wrbuffer_ref) &&   /* no dirty pages... */

	    inode->i_data.nrpages &&		/* have cached pages */

	    (revoking & (CEPH_CAP_FILE_CACHE|
@@ -2635,7 +2650,8 @@ again: 
				snap_rwsem_locked = true;

			}

			*got = need | (have & want);

			if ((need & CEPH_CAP_FILE_RD) &&

			if (S_ISREG(inode->i_mode) &&

			    (need & CEPH_CAP_FILE_RD) &&

			    !(*got & CEPH_CAP_FILE_CACHE))

				ceph_disable_fscache_readpage(ci);

			__take_cap_refs(ci, *got, true);
@@ -2643,7 +2659,8 @@ again: 
		}

	} else {

		int session_readonly = false;

		if ((need & CEPH_CAP_FILE_WR) && ci->i_auth_cap) {

		if (ci->i_auth_cap &&

		    (need & (CEPH_CAP_FILE_WR | CEPH_CAP_FILE_EXCL))) {

			struct ceph_mds_session *s = ci->i_auth_cap->session;

			spin_lock(&s->s_cap_lock);

			session_readonly = s->s_readonly;
@@ -2817,7 +2834,8 @@ int ceph_get_caps(struct file *filp, int need, int want, 
			return ret;

		}



		if (ci->i_inline_version != CEPH_INLINE_NONE &&

		if (S_ISREG(ci->vfs_inode.i_mode) &&

		    ci->i_inline_version != CEPH_INLINE_NONE &&

		    (_got & (CEPH_CAP_FILE_CACHE|CEPH_CAP_FILE_LAZYIO)) &&

		    i_size_read(inode) > 0) {

			struct page *page =
@@ -2850,7 +2868,8 @@ int ceph_get_caps(struct file *filp, int need, int want, 
		break;

	}



	if ((_got & CEPH_CAP_FILE_RD) && (_got & CEPH_CAP_FILE_CACHE))

	if (S_ISREG(ci->vfs_inode.i_mode) &&

	    (_got & CEPH_CAP_FILE_RD) && (_got & CEPH_CAP_FILE_CACHE))

		ceph_fscache_revalidate_cookie(ci);



	*got = _got;
@@ -3140,7 +3159,7 @@ static void handle_cap_grant(struct inode *inode, 
	 * try to invalidate (once).  (If there are dirty buffers, we

	 * will invalidate _after_ writeback.)

	 */

	if (!S_ISDIR(inode->i_mode) && /* don't invalidate readdir cache */

	if (S_ISREG(inode->i_mode) && /* don't invalidate readdir cache */

	    ((cap->issued & ~newcaps) & CEPH_CAP_FILE_CACHE) &&

	    (newcaps & CEPH_CAP_FILE_LAZYIO) == 0 &&

	    !(ci->i_wrbuffer_ref || ci->i_wb_ref)) {
@@ -3304,11 +3323,12 @@ static void handle_cap_grant(struct inode *inode, 
		     ceph_cap_string(cap->issued),

		     ceph_cap_string(newcaps),

		     ceph_cap_string(revoking));

		if (revoking & used & CEPH_CAP_FILE_BUFFER)

		if (S_ISREG(inode->i_mode) &&

		    (revoking & used & CEPH_CAP_FILE_BUFFER))

			writeback = true;  /* initiate writeback; will delay ack */

		else if (revoking == CEPH_CAP_FILE_CACHE &&

			 (newcaps & CEPH_CAP_FILE_LAZYIO) == 0 &&

			 queue_invalidate)

		else if (queue_invalidate &&

			 revoking == CEPH_CAP_FILE_CACHE &&

			 (newcaps & CEPH_CAP_FILE_LAZYIO) == 0)

			; /* do nothing yet, invalidation will be queued */

		else if (cap == ci->i_auth_cap)

			check_caps = 1; /* check auth cap only */

fs/ceph/mds_client.c

+2 −1
Original line number Diff line number Diff line
@@ -1776,7 +1776,8 @@ static int trim_caps_cb(struct inode *inode, struct ceph_cap *cap, void *arg) 
	}

	/* The inode has cached pages, but it's no longer used.

	 * we can safely drop it */

	if (wanted == 0 && used == CEPH_CAP_FILE_CACHE &&

	if (S_ISREG(inode->i_mode) &&

	    wanted == 0 && used == CEPH_CAP_FILE_CACHE &&

	    !(oissued & CEPH_CAP_FILE_CACHE)) {

	  used = 0;

	  oissued = 0;

fs/ceph/super.h

+1 −11
Original line number Diff line number Diff line
@@ -675,17 +675,7 @@ extern int ceph_caps_revoking(struct ceph_inode_info *ci, int mask); 
extern int __ceph_caps_used(struct ceph_inode_info *ci);



extern int __ceph_caps_file_wanted(struct ceph_inode_info *ci);



/*

 * wanted, by virtue of open file modes AND cap refs (buffered/cached data)

 */

static inline int __ceph_caps_wanted(struct ceph_inode_info *ci)

{

	int w = __ceph_caps_file_wanted(ci) | __ceph_caps_used(ci);

	if (w & CEPH_CAP_FILE_BUFFER)

		w |= CEPH_CAP_FILE_EXCL;  /* we want EXCL if dirty data */

	return w;

}

extern int __ceph_caps_wanted(struct ceph_inode_info *ci);



/* what the mds thinks we want */

extern int __ceph_caps_mds_wanted(struct ceph_inode_info *ci, bool check);

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