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authorThomas Gleixner <tglx@linutronix.de>2015-01-12 10:51:13 +0100
committerThomas Gleixner <tglx@linutronix.de>2015-01-12 10:51:13 +0100
commit2f5eaf66e580f64032b365a00157b6b58c266b37 (patch)
tree7852017c864f0eb3833782e2a017952bd8531458 /Documentation/filesystems/nfs/Exporting
parentc291ee622165cb2c8d4e7af63fffd499354a23be (diff)
parent91d1179212161f220938198b742c328ad38fd0a3 (diff)
Merge tag 'irqchip-urgent-3.19' of git://git.infradead.org/users/jcooper/linux into irq/urgent
irqchip urgent fixes for v3.19 from Jason Cooper - mtk-sysirq: Fix error handling - hip04: Fix cpu map for 16bit value - gic-v3-its: Clear a warning regarding decimal constants - omap-intc: Fix legacy DMA regression - atmel-aic-common: Retain priority when changing type
Diffstat (limited to 'Documentation/filesystems/nfs/Exporting')
-rw-r--r--Documentation/filesystems/nfs/Exporting23
1 files changed, 5 insertions, 18 deletions
diff --git a/Documentation/filesystems/nfs/Exporting b/Documentation/filesystems/nfs/Exporting
index c8f036a9b13..520a4becb75 100644
--- a/Documentation/filesystems/nfs/Exporting
+++ b/Documentation/filesystems/nfs/Exporting
@@ -72,24 +72,11 @@ c/ Helper routines to allocate anonymous dentries, and to help attach
DCACHE_DISCONNECTED) dentry is allocated and attached.
In the case of a directory, care is taken that only one dentry
can ever be attached.
- d_splice_alias(inode, dentry) or d_materialise_unique(dentry, inode)
- will introduce a new dentry into the tree; either the passed-in
- dentry or a preexisting alias for the given inode (such as an
- anonymous one created by d_obtain_alias), if appropriate. The two
- functions differ in their handling of directories with preexisting
- aliases:
- d_splice_alias will use any existing IS_ROOT dentry, but it will
- return -EIO rather than try to move a dentry with a different
- parent. This is appropriate for local filesystems, which
- should never see such an alias unless the filesystem is
- corrupted somehow (for example, if two on-disk directory
- entries refer to the same directory.)
- d_materialise_unique will attempt to move any dentry. This is
- appropriate for distributed filesystems, where finding a
- directory other than where we last cached it may be a normal
- consequence of concurrent operations on other hosts.
- Both functions return NULL when the passed-in dentry is used,
- following the calling convention of ->lookup.
+ d_splice_alias(inode, dentry) will introduce a new dentry into the tree;
+ either the passed-in dentry or a preexisting alias for the given inode
+ (such as an anonymous one created by d_obtain_alias), if appropriate.
+ It returns NULL when the passed-in dentry is used, following the calling
+ convention of ->lookup.
Filesystem Issues