c/mirror_zfs
1
0
Fork 0
mirror of https://git.proxmox.com/git/mirror_zfs.git synced 2026-05-22 02:27:36 +03:00
Code Issues Packages Projects Releases Wiki Activity

Add KMC_NOEMERGENCY slab flag

Browse Source 
Provide a flag to disable the use of emergency objects for a
specific kmem cache.  There may be instances where under no
circumstances should you kmalloc() an emergency object.  For
example, when you cache contains very large objects (>128k).

Signed-off-by: Brian Behlendorf <behlendorf1@llnl.gov>
This commit is contained in:
Brian Behlendorf
2012-09-07 14:24:17 -07:00
parent ac8ca67a88
commit cb5c2acebb
2 changed files with 9 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files
include/sys/kmem.h
+2
View File
@@ -340,6 +340,7 @@ enum {
KMC_BIT_KMEM = 5, /* Use kmem cache */
KMC_BIT_VMEM = 6, /* Use vmem cache */
KMC_BIT_OFFSLAB = 7, /* Objects not on slab */
KMC_BIT_NOEMERGENCY = 8, /* Disable emergency objects */
KMC_BIT_GROWING = 15, /* Growing in progress */
KMC_BIT_REAPING = 16, /* Reaping in progress */
KMC_BIT_DESTROY = 17, /* Destroy in progress */
@@ -365,6 +366,7 @@ typedef enum kmem_cbrc {
#define KMC_KMEM (1 << KMC_BIT_KMEM)
#define KMC_VMEM (1 << KMC_BIT_VMEM)
#define KMC_OFFSLAB (1 << KMC_BIT_OFFSLAB)
#define KMC_NOEMERGENCY (1 << KMC_BIT_NOEMERGENCY)
#define KMC_GROWING (1 << KMC_BIT_GROWING)
#define KMC_REAPING (1 << KMC_BIT_REAPING)
#define KMC_DESTROY (1 << KMC_BIT_DESTROY)