unimore/kernel-hacking-2024-linux-steffo
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Revert "NFSv4.2: Change the default KConfig value for READ_PLUS"

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This reverts commit 7fd461c47c.

Unfortunately, it has come to our attention that there is still a bug
somewhere in the READ_PLUS code that can result in nfsroot systems on
ARM to crash during boot.

Let's do the right thing and revert this change so we don't break
people's nfsroot setups.

Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
This commit is contained in:
Anna Schumaker 2023-02-15 16:49:22 -05:00 committed by Trond Myklebust
parent ec35307e18
commit 896e090eef
1 changed files with 4 additions and 4 deletions
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8
fs/nfs/Kconfig
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@ -209,8 +209,8 @@ config NFS_DISABLE_UDP_SUPPORT
config NFS_V4_2_READ_PLUS
bool "NFS: Enable support for the NFSv4.2 READ_PLUS operation"
depends on NFS_V4_2
default y
default n
help
Choose Y here to enable the use of READ_PLUS over NFS v4.2. READ_PLUS
attempts to improve read performance by compressing out sparse holes
in the file contents.
This is intended for developers only. The READ_PLUS operation has
been shown to have issues under specific conditions and should not
be used in production.